Malicious PDF — malware analysis report

Static analysis result for SHA-256 da31b680933a6b07…

MALICIOUS

PDF

71.4 KB Created: 2021-02-26 01:21:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ee782ef70948a7905109869f7345f63f SHA-1: 9845009a627a69a0ba10f80c3f1c3e3d4e4d0a48 SHA-256: da31b680933a6b07b23ce0b3cf6df7abf852a879946bcc0deff8e55aa943ae2b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://baarspo.ru/award?keyword=learn+english+free+youtube PDF link annotation
    • https://cdn.sqhk.co/momugutatok/fS120Qr/adidas_winter_hiker_speed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373755/normal_5fcdafc248e42.pdfIn PDF document text
    • https://raguwagoneneza.weebly.com/uploads/1/3/1/3/131384547/gekalam.pdfIn PDF document text
    • http://dusosax.66ghz.com/gifaj.pdfIn PDF document text
    • https://cdn.sqhk.co/manoxixo/hahghjf/nfl_fantasy_football_rankings_by_position_2020.pdfIn PDF document text
    • http://miniluk.22web.org/vimalitumem.pdfIn PDF document text
    • http://takojebuti.iblogger.org/biret.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379852/normal_602c61249d489.pdfIn PDF document text
    • http://sexugaweguko.iblogger.org/how_to_fix_a_whirlpool_washer_that_is_off_balance.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kapizepaninufo.epizy.com/wow_vanilla_arms_warrior_leveling_guide.pdfIn PDF document text
    • http://texokobatogu.epizy.com/sutejanipe.pdfIn PDF document text
    • http://rupedixinej.rf.gd/94319296446.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_off0000dc3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC3D 5212 bytes
SHA-256: ba38c57de935c89c3791c036c1fb2569c795d152aad4cbc41d3d8c14a580b828
font_01_sfnt_off0000ee05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE05 10216 bytes
SHA-256: 38278329cdce5b8c8310fed60e03446d9f36dca5a20f28f95598373d46080b2c