Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ea5ca9402240de8…

MALICIOUS

PDF

73.2 KB Created: 2021-02-21 04:56:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 28f77f4e80e0819887c072dc166de6e9 SHA-1: bb8a84a3f33a7495a1b4d4188b6e0acc98647d63 SHA-256: 2ea5ca9402240de8cc6bab878c7f81163138e1f0fb8c5f9201840735b16a76d4
194 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious sites. The document body, though partially corrupted, appears to be a lure related to 'vet clinics that offer payment plans near me', indicating a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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://maypoin.ru/wix?keyword=vet+clinics+that+offer+payment+plans+near+me PDF link annotation
    • https://cdn.sqhk.co/wifopuzuxiba/bhghcja/tisabijizazofobojerigafo.pdfIn PDF document text
    • https://cdn.sqhk.co/kevamubeminu/cjfhj98/89938689995.pdfIn PDF document text
    • https://cdn.sqhk.co/kitujesijak/LNgjYOU/21709425757.pdfIn PDF document text
    • https://cdn.sqhk.co/ruwonumatag/E8gihjf/52636111356.pdfIn PDF document text
    • https://cdn.sqhk.co/lutumodigi/i87ePrM/school_days_visual_novel_steam.pdfIn PDF document text
    • https://cdn.sqhk.co/vavusiwi/ZfJsphh/business_management_entrepreneurship_surrey.pdfIn PDF document text
    • https://cdn.sqhk.co/wepiwojeta/vAIiahd/94676060159.pdfIn PDF document text
    • https://fizegebukuri.weebly.com/uploads/1/3/1/4/131453213/1711112.pdfIn PDF document text
    • http://fewotiza.iblogger.org/the_bitcoin_standard_book_review.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449172/normal_5ffd89645402a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484107/normal_600eaea05dc93.pdfIn PDF document text
    • https://bisenazogogo.weebly.com/uploads/1/3/4/6/134686343/rerisejin.pdfIn PDF document text
    • https://juladuwupib.weebly.com/uploads/1/3/4/7/134763366/b760dc8fd2a64d0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://butaxogusevi.epizy.com/yahoo_fantasy_football_cheat_sheet_auction.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/vazedinokeneduwometes.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/booty_farm_mod_apk_1._8.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/symbol_tech_mc9090_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/60455651163.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_off0000e0a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A1 5324 bytes
SHA-256: c761f864b09dbcf3b88ab612aca3728646440de917fa8a1cb8e2f483b9b8a805
font_01_sfnt_off0000f2a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A0 10768 bytes
SHA-256: a6180da0bd2fe28c96c669fe376e2eee877309f45810212b239379b99168c766

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