Malicious PDF — malware analysis report

Static analysis result for SHA-256 d575c47e0905a3c5…

MALICIOUS

PDF

139.7 KB Created: 2021-09-05 13:34:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 8336c9d4afd9acae97dda9cbc0938f9a SHA-1: 9181e31a311084c1603be4a1f6e681afbb8a54e7 SHA-256: d575c47e0905a3c50c9ef6db7cc27ba66000b395de9ad97bb7e2187f30627a06
296 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious File

This PDF document exhibits multiple high-risk social engineering lures, including a 'Recovery secret / private key request' and a 'Clipboard command execution lure'. It explicitly instructs users to copy and paste commands into their terminal, a tactic consistent with ClickFix attacks designed to bypass macro restrictions. The document also hosts numerous links to potentially compromised websites, suggesting a phishing or credential harvesting campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://iphonerepairservice.nl/app/webroot/files/userfiles/files/gelasogefikiweretuwiraz.pdf In PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/2ik33t3gnpmghe6fg1jlkp04jj/jedagoladibiko.pdfIn PDF document text
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/6jfnln70a4daq12fhtkr592apd/30754261627.pdfIn PDF document text
    • https://cornwallstaffagency.com/userfiles/file/bofuro.pdfIn PDF document text
    • http://ed-web.cz/userfilesfile/wasanadiwusileguvufit.pdfIn PDF document text
    • https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/5ndsp5deaatfjkf5io6rddlttq/vaniwuzow.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/160a24edfbdbbe---kikevebazibimusa.pdfIn PDF document text
    • https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/58a55e0ee5900db5ae25527eef946ca4/95448459882.pdfIn PDF document text
    • https://bettyloupaints.com/userfiles/files/vofogub.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c1f1cc28e7b---nesivuvesal.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16131c569c091c---jumetanibo.pdfIn PDF document text
    • http://ruben.pl/ckfinder/userfiles/files/nasub.pdfIn PDF document text
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/9283c2c749f98250b57874f10bc0d2de/baredabelagufawazibukuw.pdfIn PDF document text
    • http://igabana.com/upfolder/e/files/20210624132600.pdfIn PDF document text
    • https://qualitylightsolutions.com/wp-content/plugins/super-forms/uploads/php/files/08462e9455e8d74dc4034c946bf21a6a/kuxemun.pdfIn PDF document text
    • https://realestateconnect.pro/wp-content/plugins/super-forms/uploads/php/files/viph5roolc6o4u9oen7cr83n57/20918100858.pdfIn PDF document text
    • http://hayatteknoloji.com/webimage/file/57169245730.pdfIn PDF document text
    • https://www.swissfillon.com/wp-content/plugins/super-forms/uploads/php/files/e92e995f1a3acf6e7af10dde35e0bae9/18085071957.pdfIn PDF document text
    • https://gamepinleri.com/calisma2/files/uploads/90627032149.pdfIn PDF document text
    • https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/419a5edbb4e94242d7136c323e2095e2/gitega.pdfIn PDF document text
    • https://parklanehotel.asia/userfiles/file/78156639902.pdfIn PDF document text
    • http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609185b6115b9---zetuviluwugufaximivu.pdfIn PDF document text
    • http://srsheicha.com/uploadfile/file/tepibupejuwazoxisoxevi.pdfIn PDF document text
    • http://airelimpio.mx/img/editor/file/29442659570.pdfIn PDF document text
    • http://crimesla.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/tajaxok.pdfIn PDF document text
    • https://parquesanalbertohurtado.cl/ckfinder/userfiles/files/demekepizawe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=letsencrypt+renew+certificate+manuallyPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001b92e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B92E 10780 bytes
SHA-256: f0ff7e03e57b82ff6c0c4606a8d9614cdcd6f75a0468cd7ed70d4daa4455e1e5
font_01_sfnt_off0001d211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D211 20440 bytes
SHA-256: f9b266f3de0f2b1ebe3d3c69f3435073cd2933a6ccb08697ed22eebe50cd0c8d
font_02_sfnt_off000207f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x207F7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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