Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa4e04cf77d98bf1…

MALICIOUS

PDF

71.2 KB Created: 2021-02-19 20:45:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a60165cd5ef1803c6f9bcadb05f8d914 SHA-1: 68cebeb157e4dc082f966195d33e2e1ba4501f98 SHA-256: aa4e04cf77d98bf1e488baa1f13f304dc3b138b9f268b2024daa15522a418d80
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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/wb?keyword=what%20is%20the%20greek%20word%20for%20prayer PDF link annotation
    • https://cdn.sqhk.co/zatufora/cNKgdje/strikemaster_ice_auger_carburetor.pdfIn PDF document text
    • https://cdn.sqhk.co/wasefago/hhjf4V8/51915470708.pdfIn PDF document text
    • http://confirmationhelpcenter.com/37827377114xv2fo.pdfIn PDF document text
    • https://purotuduveb.weebly.com/uploads/1/3/0/7/130738796/7c6c895ec.pdfIn PDF document text
    • http://fenofojerafama.22web.org/construction_estimate_excel_template.pdfIn PDF document text
    • https://cdn.sqhk.co/nisugavu/aiehcgi/fallout_4_spectacle_island_build_limit.pdfIn PDF document text
    • https://xuvibelatubeni.weebly.com/uploads/1/3/5/3/135306186/9255f.pdfIn PDF document text
    • http://discovljzg.fun/vufututolugisovikinepumwv9.pdfIn PDF document text
    • https://kazilapematif.weebly.com/uploads/1/3/5/2/135293457/0e65e4752eb2b33.pdfIn PDF document text
    • http://zobebukore.22web.org/pumiwobu.pdfIn PDF document text
    • https://vosojexurixug.weebly.com/uploads/1/3/1/0/131070535/44f7e.pdfIn PDF document text
    • https://cdn.sqhk.co/nedivixozu/idhmnEf/wikipedia_game_of_thrones_season_1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wozinad.rf.gd/maravilloso_desastre_jamie_mcguire.pdfIn PDF document text
    • http://sonunetenigido.epizy.com/sodibuzovun.pdfIn PDF document text
    • http://sidukumu.epizy.com/xelevititokutunef.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_off0000d983.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD983 5540 bytes
SHA-256: fc838333a09cb35621d2e0a040dd7cc6d1d2b8dc2b64c1a6992773c843738a59
font_01_sfnt_off0000ec7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7A 10372 bytes
SHA-256: ff542556ce397f4f9ed32c113a83a55adec65fbfbb179f0e16c2fa93d6319b88