Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c1c39f23ede1d79…

MALICIOUS

PDF

74.4 KB Created: 2021-02-02 04:33:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: cf9e769ee7f617be1781b02b06e4411e SHA-1: 7e57e08728089742d9fd0a07ee5b32506ce46c9c SHA-256: 1c1c39f23ede1d79631f5f4ee8be834262c79efa83ebf1a4011842330f991973
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/aws?utm_term=warranty+letter+format PDF link annotation
    • https://cdn.sqhk.co/vedafigula/hiifMgj/datupujaw.pdfIn PDF document text
    • http://likelid.xyz/vizetofitewuterazi5ccqq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421957/normal_5fddb23668498.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380876/normal_5ff5edfc80109.pdfIn PDF document text
    • https://cdn.sqhk.co/feluxolid/HfjaX2l/xuvuxelopatofogiwexiwo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454681/normal_600db1a6c5963.pdfIn PDF document text
    • http://qwertyujg.xyz/98475483921intsf.pdfIn PDF document text
    • https://cdn.sqhk.co/bazopaxepifu/TjgmwoK/farurazuxamaxik.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405208/normal_5fcd367aa2a44.pdfIn PDF document text
    • http://pmaider.com/kuvoxutevi0q4k.pdfIn PDF document text
    • http://razvivatel.blog/77421898985crbxd.pdfIn PDF document text
    • https://cdn.sqhk.co/risejesob/jjajbhh/bojifurakelikoxa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417312/normal_5fd5fe64020d9.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/mesotodimus/speech_writing_format_for_class_11_cbse.pdfIn PDF document text
    • http://nofulevar.epizy.com/penny_dreadful_episode_guide_season_1.pdfIn PDF document text
    • http://gevewodex.epizy.com/card_creator_program_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/mepazureloxogotovabu.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/zifivokuzakatudutakujazex.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_off0000e873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE873 4852 bytes
SHA-256: 38a7716374b2be37b14241974ed5c063310ad795d9b87f059a11f0327fc2450d
font_01_sfnt_off0000f8f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F2 10488 bytes
SHA-256: 5d1836b5bce73bb50f4646c9af8c286e79d9baf86133ee687cf933dd95b20cde