Malicious PDF — malware analysis report

Static analysis result for SHA-256 68e619afb895b426…

MALICIOUS

PDF

80.0 KB Created: 2021-09-01 08:31:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 49e6a6702382b5b06d14bb68d2387ced SHA-1: 9599539215014ca22730ebf2292e20cbaaec6ab2 SHA-256: 68e619afb895b4265611628f10162c618aab19e53a1084d2770227fe19861104
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier with high confidence. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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
  • 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://laborke.ru/uplcv?utm_term=emptiness+meaning+in+marathi PDF link annotation
    • https://lerong.vn/wp-content/plugins/super-forms/uploads/php/files/880ecc8b4be00b8796b508f90024ea41/tisorudaforomaxakirat.pdfIn PDF document text
    • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/2fe5ad9eef5587562bce12016f869f86/41353395519.pdfIn PDF document text
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac806dba0a0---24392212265.pdfIn PDF document text
    • https://habrit.tw/ckfinder/userfiles/files/3868881470.pdfIn PDF document text
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/45b515a845d8f8f594c45120a27883cd/rotejaretegatopabene.pdfIn PDF document text
    • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160807af8de03d---fabadokilenuputiniwaxefi.pdfIn PDF document text
    • https://netshopnepal.com/userfiles/file/definifekubi.pdfIn PDF document text
    • http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089e122ede64---99423010935.pdfIn PDF document text
    • http://alhouti.com/userfiles/file/66961212446.pdfIn PDF document text
    • https://pnlcoach.com/misc2/file/In PDF document text
    • http://xn--sanitrprofi-p8a.ch/fckeditor/editor/images/file/totajalajapiminivekojosa.pdfIn PDF document text
    • http://trevelci.ru/ckfinder/userfiles/files/53948107280.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c20199aaf94---xipenivalubitaxur.pdfIn PDF document text
    • http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/160d804af515f1---gawajivukavorimu.pdfIn PDF document text
    • https://rubin2000-distribuitorshop.ro/userfiles/file/wotagejozafidekawur.pdfIn PDF document text
    • https://bursac.net/userfiles/file/55044617750.pdfIn PDF document text
    • https://kompaspt2.com/contents//files/zajofovovus.pdfIn PDF document text
    • http://pwmtqatar.net/userfiles/file/totonododonupupudaxa.pdfIn PDF document text
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093fd25198d1---38714211127.pdfIn PDF document text
    • https://evenimentecastel.ro/wp-content/plugins/super-forms/uploads/php/files/he83p4d7bj5heblj0l6erm2urf/90630873158.pdfIn PDF document text
    • http://aotwresort.info/ckfinder/userfiles/files/sidojewatinogopu.pdfIn PDF document text
    • https://canadianrelocation.net/wp-content/plugins/formcraft/file-upload/server/content/files/160cf5c0b8b3e7---kusifugesexex.pdfIn PDF document text
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB72 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e384.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE384 20360 bytes
SHA-256: 69b9c50718f0ae5bd151cf2b52332b05fd3921f91ffb089cafd0c395220bacf1
font_02_sfnt_off00011906.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11906 10516 bytes
SHA-256: 9ae0fd25014db5d6d53fe3cc991dd6ec2a71b13e64b80e84337d7e1383dc1e33

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