Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e1a33512fe71126…

MALICIOUS

PDF

82.2 KB Created: 2021-06-05 14:15:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 21f1954b27d896310da0f9ca6bc80a93 SHA-1: 41c595c5dd211239f9a265524f0faedc3f36271c SHA-256: 1e1a33512fe711268b09a29e5f8095c4d1451bbe2a124f65b0a384e3a1d728dd
156 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to what appears to be a link farm designed to obscure malicious intent. The primary URL, 'https://drafthe.ru/pbw?utm_term=pimp+iceberg+slim+books+a+million', is suspicious and likely leads to a malicious site. While no scripts were explicitly extracted, the PDF structure and numerous external links suggest an attempt to redirect users to potentially harmful content, aligning with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://drafthe.ru/pbw?utm_term=pimp+iceberg+slim+books+a+million
    • https://cdn-cms.f-static.net/uploads/4454967/normal_606668f5969a8.pdf
    • https://static.s123-cdn-static.com/uploads/4484624/normal_600304d44cb3b.pdf
    • https://cdn-cms.f-static.net/uploads/4402936/normal_5fdbfb2e011dc.pdf
    • https://static.s123-cdn-static-d.com/uploads/4467564/normal_60b1977e9623b.pdf
    • https://kugakisan.weebly.com/uploads/1/3/4/3/134390280/josukitesabeni.pdf
    • https://zopamege.weebly.com/uploads/1/3/5/9/135966764/5e6af92f.pdf
    • https://cdn-cms.f-static.net/uploads/4372740/normal_600d45d499035.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://moxulolo.pbworks.com/f/ti_nspire_cx_cas_instruction_manual.pdf
    • https://uploads.strikinglycdn.com/files/28c43791-7ddf-4f85-9605-ca23a249721b/how_to_operate_an_ariston_washing_machine.pdf
    • https://uploads.strikinglycdn.com/files/5fa92a60-26c0-402c-aa99-b7aa870b8128/is_disney_app_available_on_samsung_smart_tv.pdf
    • http://bupataved.pbworks.com/w/file/fetch/144421197/psikolojide_baml_ve_bamsz_deiken_nedir.pdf
    • http://pokuwatosat.pbworks.com/w/file/fetch/144438411/how_to_define_accrual_basis_accounting.pdf
    • https://uploads.strikinglycdn.com/files/9e94409a-a033-4fe0-a6b3-a0c64e759b0b/gonubukatezodaj.pdf
    • https://uploads.strikinglycdn.com/files/c4408016-8c02-43da-be3a-29b29241945d/zusaligumanebawezisi.pdf
    • https://uploads.strikinglycdn.com/files/237e96f2-e22b-4513-92ef-5ad5dd48a1f0/discipleship_essentials_greg_ogden.pdf
    • http://wurutaw.pbworks.com/f/45942258508.pdf
    • https://uploads.strikinglycdn.com/files/a77af066-bea2-41a7-8819-f57c5e54eae7/sizurubiseku.pdf
    • http://luwapoveduvi.pbworks.com/f/24989254507.pdf
    • http://risoxef.pbworks.com/w/file/fetch/144661818/kaggle_titanic_dataset_solution.pdf
    • http://jesababa.pbworks.com/w/file/fetch/144609318/bivawenupakoxo.pdf
    • http://luwivaj.pbworks.com/f/how_to_send_money_through_western_union_using_debit_card.pdf
    • https://uploads.strikinglycdn.com/files/d6229129-6a0e-4281-8753-2c88fbf536ae/48427358344.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001039c.bin
a29328a89a1261659766061a3610baf4df39e45cd4448c9a5769907d86064afa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1039C 5460 bytes
font_01_sfnt_off00011610.bin
aa5d030d41a0ccbb60dfc779073f467b192fb64e8176aff5ecfb67878aa921f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11610 10540 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.