Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bc3fc1a6a75bc2b…

MALICIOUS

PDF

77.6 KB Created: 2021-09-15 12:15:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 78e88b541e3f73e40fdd7608bf635fbc SHA-1: 907b1f81ea19df44d7ec886bea6c2becbf611f37 SHA-256: 5bc3fc1a6a75bc2b440ec194e521257feade77126760bb073bafe86cf08e7cb2
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs pointing to a link farm, suggesting a phishing or malware distribution scheme. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 http://michelesherrinlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/70129611799.pdf In PDF document text
    • http://iltorg.ru/upload/file/xelasubinukagajuti.pdfIn PDF document text
    • http://dreesmann-foto.de/userfiles/file/62997848219.pdfIn PDF document text
    • https://www.rosebankprimary.co.za/inc/ckfinder/userfiles/files/wigenodoru.pdfIn PDF document text
    • https://drosamahetta.com/userfiles/file/rireganimosoburisudefat.pdfIn PDF document text
    • http://generaltubi.com/container/ckfiles/files/98980994129.pdfIn PDF document text
    • http://pegastelco.com/pictures/files/petuxudoloxede.pdfIn PDF document text
    • http://hanhthien.net/uploads/file/rezasunuxawop.pdfIn PDF document text
    • http://klenderbio.com/upload/files/podofiluberivi.pdfIn PDF document text
    • http://budoprojekt.eu/obrazy/file/nazixegitega.pdfIn PDF document text
    • https://superpackeg.com/userfiles/file/xuxagowojazo.pdfIn PDF document text
    • http://dochoiotovn.com/uploads/userfiles/file/tebamizujazidugop.pdfIn PDF document text
    • http://ladna.pl/user_images/file/29713593593.pdfIn PDF document text
    • http://cdmvt.cz/sites/default/files/75333154937.pdfIn PDF document text
    • http://amicissiapiemonteisa.it/userfiles/files/15943082449.pdfIn PDF document text
    • http://sanarina-coaching.de/ckfinder/userfiles/files/vivatiwamovonuwuner.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ed83814a2c---9774382051.pdfIn PDF document text
    • http://kleinschaden-expert.de/userfiles/file/gunefelijine.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/fitilodetiletutoparenev.pdfIn PDF document text
    • https://www.mftelhas.com.br/adm/Editor/ckfinder/userfiles/files/10685482578.pdfIn PDF document text
    • https://108pizza.pl/uploads/userfiles/files/60669901472.pdfIn PDF document text
    • https://pachetedeturism.ro/images/files/50674872119.pdfIn PDF document text
    • https://lee-trading.tw/archive/upload/files/gonubibalut.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=where+is+trash+located+on+my+phonePDF 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_off0000ca82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA82 17296 bytes
SHA-256: e2a3e80f7d7d87fdec8b016f8c7df7b8fcea3d2171e84f9035b016a5e4ad9f3f
font_01_sfnt_off0000f747.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF747 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010f5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F5E 10888 bytes
SHA-256: 30268bb3c5679903d80599382137195f7b3ccceb3a3acbd24b4e8936e0b8dde2

Open this report in the interactive analyzer, or submit your own file for analysis.