Malicious PDF — malware analysis report

Static analysis result for SHA-256 64e7cafd4ae2f953…

MALICIOUS

PDF

114.7 KB Created: 2021-03-17 12:48:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 118b8106c672a4222287eb46d488c9f8 SHA-1: f1597c6927c1610fb103116745a8b9259715b5ba SHA-256: 64e7cafd4ae2f9536b45101adae8cdafde5422bfd40797a854a833b9b1f402af
134 Risk Score

Malware Insights

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

This PDF document was flagged by ML classifiers and ClamAV as malicious. It contains numerous links to external websites, including one that appears to be a phishing lure related to banking and credit. The document body, though heavily obfuscated, suggests a deceptive theme. The presence of multiple disposable hosting links and a link farm heuristic indicates a likely attempt to distribute malicious content or phish users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ponafet.ru/wix?keyword=banking+and+credit+scavenger+hunt+answer+key PDF link annotation
    • https://pexerewiku.weebly.com/uploads/1/3/5/3/135313352/lupikufodu-fasipisisipi.pdfIn PDF document text
    • https://dutizadip.weebly.com/uploads/1/3/4/8/134889078/lowogefewaxo.pdfIn PDF document text
    • http://coins24h.com/365843483757tm4v.pdfIn PDF document text
    • http://xutuxul.22web.org/the_green_mile_book_review.pdfIn PDF document text
    • http://nogivubuleduwi.22web.org/velocity_vs_time_graph_negative_slope.pdfIn PDF document text
    • http://faceit.su/rulowojodusofevijunojomiwq99rw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476282/normal_5fce6ef4e8c9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421342/normal_603ea7fe3dd5c.pdfIn PDF document text
    • https://cdn.sqhk.co/kutajanode/Vpiggfx/25691270218.pdfIn PDF document text
    • https://cdn.sqhk.co/vopovaroxamo/jgiii4u/71899414736.pdfIn PDF document text
    • https://cdn.sqhk.co/zofagopipowi/xghhi88/gavugarijagerozakesi.pdfIn PDF document text
    • https://cdn.sqhk.co/sazalevimit/dzialjh/hangout_application_for_windows.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413012/normal_6041443c6f362.pdfIn PDF document text
    • http://finansi-7.online/699276115616ppan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://b20aee1f-b1b7-4e4e-be5e-d884e4ece670.filesusr.com/ugd/10e3af_066e8299ed544d1b9a841d723e8b0760.pdf?index=trueIn PDF document text
    • https://4ac36a2f-1533-488b-b282-cf34cdace458.filesusr.com/ugd/bcfc12_2d4e76aee08f42f78b8dfd2acf0919f9.pdf?index=trueIn PDF document text
    • https://fc060a1e-8c1d-4b7d-bafd-75f79d4c6355.filesusr.com/ugd/c0a468_d5cf4aa750564352ac4b73bf68da20cc.pdf?index=trueIn 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
    • 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_off000169ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x169AE 5536 bytes
SHA-256: f9a7142b9521b91e96b6f7618138dccaa95a63c9cf6061d194e948063801dcf2
font_01_sfnt_off00017c9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17C9F 12400 bytes
SHA-256: 3d9605fd2c23aaa1f7c5944d2837a61b8850f037d7088fc1a7a18e07a3a79f72
font_02_sfnt_off0001a6d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A6D7 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

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