Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c80886f1a8da2e5…

MALICIOUS

PDF

72.8 KB Created: 2021-06-13 05:18:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e5164b4846a4790c67709a0cb83bc490 SHA-1: f4bd0e83d9323a1a28ff8ad7870d4cc1a6391cda SHA-256: 0c80886f1a8da2e5783a5de73d28e7800681e4586fd81a380eb24fc91d82373b
166 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of a credential phishing lure. The heuristic 'SE_MFA_LURE' indicates the document is designed to harvest one-time codes or MFA confirmations. An embedded URL, https://crophysi.ru/123?utm_term=apple+music+f%25C3%25BCr+android+tv, likely leads to the phishing page.

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
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://crophysi.ru/123?utm_term=apple+music+f%25C3%25BCr+android+tv PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/48bd755c-4487-43e9-954a-d2f74c7a7232/kobirimexololopimaf.pdfIn PDF document text
    • http://bezawagiga.pbworks.com/f/environmental_impact_assessment_in_dubai.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03f62d34-9df6-4c16-96b3-642b529e6cc0/are_graphic_novels_comics.pdfIn PDF document text
    • http://dimutojopog.pbworks.com/f/46939151143.pdfIn PDF document text
    • http://jolowajuwijo.pbworks.com/w/file/fetch/144521286/ludo_star_mod_apk_unlimited_money_and_gems_download_apkpure.pdfIn PDF document text
    • http://lifelekufa.pbworks.com/w/file/fetch/144831195/sharp_lcd_tv_instruction_manual.pdfIn PDF document text
    • http://fudejob.pbworks.com/f/nidolikedamowiwifepidis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/742f515d-b1a4-4660-964f-d83ad3d4e65c/meek_mill_tony_story_book.pdfIn PDF document text
    • http://zupelapowi.pbworks.com/w/file/fetch/144940671/78715730090.pdfIn PDF document text
    • http://supatibu.pbworks.com/f/60512437949.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d598bf78-2ebb-4454-ad3c-b14a21590596/gcam_mod_apk_download_latest_version.pdfIn PDF document text
    • http://safubudesowi.pbworks.com/w/file/fetch/144884016/vawijokaxug.pdfIn PDF document text
    • http://zofatifi.pbworks.com/f/pokemon_platinum_randomiser.pdfIn PDF document text
    • http://vawijoj.pbworks.com/w/file/fetch/144447720/69697458605.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e860a00-1cdb-4612-bad0-867de3254861/felasefava.pdfIn PDF document text
    • http://xuresasadox.pbworks.com/w/file/fetch/144747339/kurtulu_sava_cepheler_testi.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_off0000dd9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD9C 5468 bytes
SHA-256: 096068e5078e1de3bdae514bb89515bb3bf82ce1d193e08faafa3d8aa810ac6b
font_01_sfnt_off0000eff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFF5 10612 bytes
SHA-256: 4857b88a9cd1d70f98da0fe34a048ce7ffda78696fc5b12108fb70b8bd6c2416

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