Malicious PDF — malware analysis report

Static analysis result for SHA-256 c87bf12e21707617…

MALICIOUS

PDF

71.4 KB Created: 2021-01-31 16:02:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-31
MD5: 28571e04fa149bddd20dd84b13f8c653 SHA-1: 59211609c6e43783267ffd48cfe83a900a5ec750 SHA-256: c87bf12e2170761788ed72e5b4eaea28730cb6c7c4014442b1f9e30da11a1698
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/shook?utm_term=olympics+2021+event+schedule PDF link annotation
    • http://help-business-media.com/fekutukebokovumafiebuz1.pdfIn PDF document text
    • http://oyuncuxx.com/vafezubish92zz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369307/normal_600b6e997f624.pdfIn PDF document text
    • http://egrn-order.online/89131681186581xm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366958/normal_60161aaad5ce6.pdfIn PDF document text
    • http://lnstagramcopyrightservices.org/stack_the_states_2_gameplayv266x.pdfIn PDF document text
    • http://tizezs.xyz/10707140377jkex6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368229/normal_6014e517b1fee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481527/normal_6003798eb677e.pdfIn PDF document text
    • http://sandiego-podcasts.com/summoners_war_lost_centuria_gameplaymoe1k.pdfIn PDF document text
    • http://sputnews.com/40156881519lu5pk.pdfIn PDF document text
    • https://sidugavumudoriz.weebly.com/uploads/1/3/4/9/134902227/36f304c606c2b8.pdfIn PDF document text
    • https://litaxavuve.weebly.com/uploads/1/3/4/8/134848922/fuzokokode.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wawutanow.epizy.com/manualidades_para_navidad_con_una_botella.pdfIn PDF document text
    • http://kolenexe.epizy.com/wimemazuwaxoposowesite.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_off0000da07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA07 5524 bytes
SHA-256: 2f31d4a58c0162c44caa2659564e09f2a212bde42126752c37493ffbb0b8bd66
font_01_sfnt_off0000ecc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECC3 10652 bytes
SHA-256: a9240b5f39ff36e48b773f41a74691fbb03f5044fbb1c725ab3c2c90fd37b173