Malicious PDF — malware analysis report

Static analysis result for SHA-256 80614b9f072f81ca…

MALICIOUS

PDF

74.7 KB Created: 2021-06-10 04:55:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 1db06c51e6497c8d72947e46af364853 SHA-1: 085fb9eddbe98ac5ec07aabecb22bca3439e21f8 SHA-256: 80614b9f072f81ca4fc624483ec19dce4be89fe87b3d660b4251f6eed7db8b31
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains an embedded URL that redirects to a malicious domain, likely as part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains references that align with a lure for a game-related build, directing users to a suspicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://ketchas.ru/pbw?utm_term=raid+dracomorph+build PDF link annotation
    • https://gajubunumokava.weebly.com/uploads/1/3/4/3/134341855/vadejafawufujofi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408340/normal_604ecf9be025d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380078/normal_605c491b2b986.pdfIn PDF document text
    • https://magavesitike.weebly.com/uploads/1/3/4/5/134581553/3136748.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491686/normal_60288dd221a2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482216/normal_60125f489f733.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422163/normal_60300e9dcd2f0.pdfIn PDF document text
    • https://mibajajezek.weebly.com/uploads/1/3/4/0/134017497/jotoxo-nalarekat-wawib.pdfIn PDF document text
    • https://nakalefa.weebly.com/uploads/1/3/4/5/134522788/1895166.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b5343b0-f71b-4b85-9afc-78df315a0f9f/xivapemubixadele.pdfIn PDF document text
    • http://gorixose.pbworks.com/f/how_to_get_windows_10_activation_key_for_free.pdfIn PDF document text
    • http://xuwajesorewo.pbworks.com/f/xonufofubukemomebasowepo.pdfIn PDF document text
    • http://tagexoba.pbworks.com/f/90348003042.pdfIn PDF document text
    • http://kekirow.pbworks.com/w/file/fetch/144810438/wordly_wise_3000_book_8_answer_key_free.pdfIn PDF document text
    • http://xetibubib.pbworks.com/w/file/fetch/144417792/jijijak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63d5cbe6-f28c-4984-bdd6-3947ffe77bae/einsteins_dreams_analysis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81e082af-ee87-46a7-9496-295c4eed66b7/free_crochet_doily_patterns_diagrams.pdfIn PDF document text
    • http://gazoridixilu.pbworks.com/w/file/fetch/144919251/govunab.pdfIn PDF document text
    • http://xosezoranad.pbworks.com/w/file/fetch/144664848/37599609883.pdfIn PDF document text
    • http://luwosotatex.pbworks.com/w/file/fetch/144657078/tajevozisomos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47642e5d-45f0-4656-8b10-f2ffe1f4414f/10176319769.pdfIn PDF document text
    • http://rimikupababo.pbworks.com/f/jagiligexenoxuf.pdfIn PDF document text
    • http://lulimogosan.pbworks.com/w/file/fetch/144509913/wojixukigoku.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_off0000e95f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE95F 5280 bytes
SHA-256: b15a73fe225aca1ac083b678391f2b2da306af19453d18c1d68f394700688206
font_01_sfnt_off0000fb26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB26 10056 bytes
SHA-256: 4dc891a968a647e694110449f1c38d58b1daa0e5f2c710a3d0957b455bee40dd

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