Malicious PDF — malware analysis report

Static analysis result for SHA-256 64144654e8d1fe75…

MALICIOUS

PDF

76.3 KB Created: 2021-03-12 04:47:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: fe024ab1b21baa84866078389d42f8b9 SHA-1: 421179fecdc1d97a8e2bd82d258a37f8d29e133f SHA-256: 64144654e8d1fe75c3f96e279f2856d40396bd638ee51cc13c1dbdf8433a72ad
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, a common tactic for SEO link farms and phishing. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially harmful sites, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://gimoguvi.ru/wb?keyword=yard%20machine%20riding%20lawn%20mower%20steering%20parts PDF link annotation
    • https://suvewuvasalu.weebly.com/uploads/1/3/4/7/134762181/69ff81eae1f4b.pdfIn PDF document text
    • http://private-channel.site/droit_des_affaires_livre9q5bi.pdfIn PDF document text
    • https://cdn.sqhk.co/wisisatofife/HYZieAj/big_farm_story_mod_apk_download.pdfIn PDF document text
    • http://vvd.bar/reporter_news_ethiopiaskkms.pdfIn PDF document text
    • https://cdn.sqhk.co/rexukewanej/gihgfjd/87059835163.pdfIn PDF document text
    • http://english-10.site/7028980637758xom.pdfIn PDF document text
    • http://maleev.online/what_does_harley_extended_warranty_cover9es56.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373788/normal_5ff07c8364ce7.pdfIn PDF document text
    • https://cdn.sqhk.co/lajakukilo/qjcBifz/fufepif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471273/normal_5fd30f735eeb6.pdfIn PDF document text
    • https://cdn.sqhk.co/tabakotodi/cghgZlg/can_i_paint_apple_airpods.pdfIn PDF document text
    • https://vavixama.weebly.com/uploads/1/3/4/4/134471840/4430480.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461207/normal_5fd7859847778.pdfIn PDF document text
    • https://cdn.sqhk.co/janawezexoj/WihbhfX/word_create_cross_reference_text.pdfIn PDF document text
    • https://mebusogaduvorit.weebly.com/uploads/1/3/0/9/130969439/2761684.pdfIn PDF document text
    • http://erkutungotu.com/on_green_dolphin_street_lead_sheet_ebyr494.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447271/normal_5fdb60caea68c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388293/normal_5fc5c087de7ef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tofizo/17082374448.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/betfair_apk_app.pdfIn PDF document text
    • https://s3.amazonaws.com/donukadizolin/suporurilum.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/borehole_pump_installation_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/jugux.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED00 5540 bytes
SHA-256: dcaf9734c42fc9ef688fdd0e6d064c47d13689d8cfc078ba4e8519a33365d78a
font_01_sfnt_off0000ffc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC4 10444 bytes
SHA-256: a59bec048ed97978e05d9fe397bfe8ca801cc1948fe8c0a8fa5ec5d4cac03575

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