Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7c133f8efb9b3fc…

MALICIOUS

PDF

92.2 KB Created: 2021-06-27 11:53:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: cae31a6a7549f4b0eb95a563ff28249e SHA-1: 5b411395ebe6acb9dff5fc50d25f6a55a531b51b SHA-256: c7c133f8efb9b3fc749ec8ffdd972383af4442972ffbf91388295f6ba687ef60
196 Risk Score

Malware Insights

MITRE ATT&CK
T1059 Command and Scripting Interpreter T1566.001 Spearphishing Attachment

This PDF document was flagged by a machine learning classifier and ClamAV as malicious. It contains a 'clipboard command execution lure' heuristic, indicating it instructs the user to copy and paste content into a shell, a common technique for executing malicious commands. The document also hosts numerous links to potentially compromised WordPress sites, suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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
  • 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://www.autodepotperformancegroup.ca/wp-content/plugins/super-forms/uploads/php/files/54gd4rg3p6a7t3f138aloj6ugi/topezodoxujabavami.pdf In PDF document text
    • https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/81405fc7ecf02d1c078f998a70f50b15/51267530184.pdfIn PDF document text
    • https://divinenine.net/userfiles/file/7882074455.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607b0e44cd768---lewojilinolo.pdfIn PDF document text
    • https://ismart99.net/upload/files/bekafidebatukuvewiwasu.pdfIn PDF document text
    • http://dodici12.ru/wp-content/plugins/super-forms/uploads/php/files/56eh065q4kt7vntru8pk9dntn6/wizetewevosigenufa.pdfIn PDF document text
    • http://www.celso.org/download/99802020511.pdfIn PDF document text
    • https://trvstore.com/userfiles/file/jatuxe.pdfIn PDF document text
    • http://adams-gold.ru/archive/image/file/14023307244.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093dee569a4f---3109221418.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1609fc90bec730---tulabowojivitukaki.pdfIn PDF document text
    • http://www.marcelasemper.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d799884ed39---regobovot.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/1c4bc1c983eb088eff5f579a9579b9aa/gakagulotukemitevuwunogir.pdfIn PDF document text
    • https://brandonsmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/oeukrq2j0njvt0li49qbq2bnu4/kinesosinurezufa.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/qbd0gjvt4rpghc9p8riotdn2nr/tiful.pdfIn PDF document text
    • https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/22b7446754181c5c515c5c00a75b05c1/43540218835.pdfIn PDF document text
    • http://am-assets.com/aom/magnolia/userfiles/file/xidixexigejitiwotunuw.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/frju3evd8o4olbc6edirji1qoc/guwute.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/bce07dfe7a559dd41bc0eb56260496f9/xuvonetanewivowabijazib.pdfIn PDF document text
    • http://bielwod.com/userfiles/file/navuganofowifenekobipeki.pdfIn PDF document text
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/jp2sj3ie12n7626oh758e9bgbn/dafidiwanojofekitiri.pdfIn PDF document text
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16074cfbdca3d3---70058902023.pdfIn PDF document text
    • http://hb1004.com/userData/board/file/68452349560.pdfIn PDF document text
    • http://narcisse.sk/editor_uploads/files/22562653950.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cb9e257a91---69774543518.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=degrees+to+radians+radians+to+degrees+worksheetPDF 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_off000100ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100ED 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011904.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11904 10660 bytes
SHA-256: 97e703a3d37b397058336f5cc9ee0cfc09d874805e41aa209894a56f372d7f85
font_02_sfnt_off00013138.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13138 18348 bytes
SHA-256: 11683cef71019ddde5b15cbeadfa5560bf06e1a9f79c2d359c999fadf782267c

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