Malicious PDF — malware analysis report

Static analysis result for SHA-256 95e0394df10bce97…

MALICIOUS

PDF

79.5 KB Created: 2021-03-12 22:07:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 7c8a008af3c2c22dc86c25422074af81 SHA-1: dae9b3371d809819942712d34c20e0e47f1dec12 SHA-256: 95e0394df10bce977d47c67aa99bd9bb0aa1cee4a23dc7bfd05047438b29f0c1
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

Heuristics 6

  • 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 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://xezojetit.ru/123?utm_term=cognos+report+studio+filter+between+dates PDF link annotation
    • https://cdn.sqhk.co/valibekarofu/ji58idz/titabed.pdfIn PDF document text
    • https://nokajavu.weebly.com/uploads/1/3/0/9/130969653/zujofezun-fabipozoza-zilusolesemil-sazozobos.pdfIn PDF document text
    • https://miniroworopan.weebly.com/uploads/1/3/4/4/134444940/gofadanazuwaf.pdfIn PDF document text
    • https://rejoxaratexudo.weebly.com/uploads/1/3/1/4/131453252/timimilitisi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383699/normal_5fec3ddf8651e.pdfIn PDF document text
    • https://torufiwatus.weebly.com/uploads/1/3/5/3/135312416/tasiduxoradufe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445321/normal_5fe90a2e1be2a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488323/normal_5fcb5a9726973.pdfIn PDF document text
    • https://mologikonazo.weebly.com/uploads/1/3/4/7/134706863/zinolagojafowome.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450876/normal_603d8d06d18cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371244/normal_602637d1de6c3.pdfIn PDF document text
    • https://gumewutudeg.weebly.com/uploads/1/3/0/8/130813982/tukepegibuzu.pdfIn PDF document text
    • https://nuxogisufebodad.weebly.com/uploads/1/3/5/9/135965827/kokobifawezo.pdfIn PDF document text
    • https://cdn.sqhk.co/bupitagalir/ibfie6V/babamuvafakalala.pdfIn PDF document text
    • https://jixejuterekafiw.weebly.com/uploads/1/3/4/5/134508928/ea5b0e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413119/normal_60030d047a333.pdfIn PDF document text
    • https://cdn.sqhk.co/logubaxe/ic3Anjd/iron_cause_rash.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369797/normal_6017064e6c20a.pdfIn PDF document text
    • https://fatibetoliwan.weebly.com/uploads/1/3/4/7/134731660/vuwebaf-sakibakaf-borifigumujov.pdfIn PDF document text
    • https://jamelowo.weebly.com/uploads/1/3/1/6/131606155/5725806.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420617/normal_5fdf4bf545649.pdfIn PDF document text
    • https://cdn.sqhk.co/dipujabuxiw/6ihjajT/les_capitales_des_pays_d_afrique.pdfIn PDF document text
    • https://murufirekitopu.weebly.com/uploads/1/3/1/8/131856476/rinetozu-towemomake-lavarob-tutojomasometon.pdfIn PDF document text
    • https://cdn.sqhk.co/gafisasiwu/9jyNCPG/super_smash_bros_ultimate_king_k_rool_guide.pdfIn PDF document text
    • https://revafabeku.weebly.com/uploads/1/3/4/7/134708131/temobepazega.pdfIn PDF document text
    • https://gusagipo.weebly.com/uploads/1/3/4/0/134017144/fibuxisapad-boxinudon-navotebopevi-fevilo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405206/normal_5fe02008ecab7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f6d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D9 5344 bytes
SHA-256: f0ab3825c4c7408ee1a1d06b9c10be9db44f76408b402309cd6e3a909384f31f
font_01_sfnt_off00010924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10924 11300 bytes
SHA-256: e4b9b27bd29836a243d395f093647d630b2e27c450c9beedbbde42a83e2df3af