Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce202447e3abd0f2…

MALICIOUS

PDF

79.5 KB Created: 2021-02-27 12:18:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: fa6dd6eab644f4e38ea76f062c7abe95 SHA-1: 8ecd648de329938f434ebd859850f62e0a90935e SHA-256: ce202447e3abd0f2049a80ae3d284dce000fff5173e373e01a54635c4dfa2053
166 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. The document body, though truncated and obfuscated, combined with numerous embedded URLs, suggests an attempt to redirect users to malicious sites. The heuristic 'SE_PAYMENT_REDIRECT_LURE' strongly indicates a business-email-compromise pattern, aiming to trick users into changing payment details.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://soxebez.ru/123?utm_term=how+much+does+honda+charge+for+service PDF link annotation
    • http://nijibegosovatiz.iblogger.org/blight_map_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502698/normal_5fd355c66daa7.pdfIn PDF document text
    • http://rozujed.sportsontheweb.net/jagelawaju.pdfIn PDF document text
    • http://bathforlegs.xyz/maquina_de_coser_singer_316_g_manualwaav8.pdfIn PDF document text
    • http://anyita.space/anthem_bcbs_provider_adjustment_request_formpgxiy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481065/normal_600ed62e1544b.pdfIn PDF document text
    • http://tiktokfrance.fun/21376985910v5nbt.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/vixuwogetiv/4433188982.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/outstanding_balance_request_letter_template.pdfIn PDF document text
    • http://vazojebimuvap.epizy.com/organized_crime_and_corruption_reporting_project_wiki.pdfIn PDF document text
    • http://gotizafikaj.rf.gd/how_to_descale_keurig_mini_brewer.pdfIn PDF document text
    • http://piwalalif.rf.gd/76299005551.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/vanilla_blacksmithing_leveling_guide.pdfIn PDF document text
    • http://diwavubodinaroj.myartsonline.com/what_is_an_agape_meal.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_off0000f967.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF967 5516 bytes
SHA-256: b548ea594dbcb8ba0d8fc0207126bc9b03f325a2fd9f5dd31e6371413470c522
font_01_sfnt_off00010c16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C16 10692 bytes
SHA-256: a35a06d4dca134fa0a37475d0ae9cd074785f5d5c03aa61723297e09ffe2db51

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