Malicious PDF — malware analysis report

Static analysis result for SHA-256 01359b12aa457815…

MALICIOUS

PDF

82.3 KB Created: 2021-03-10 04:10:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f74f1b06c936075ce051ac01e13449cb SHA-1: 5e5d12364ccb455f0e8ae04688ff2aa7f7f4ff57 SHA-256: 01359b12aa4578153edac9624f3e5f743248f2bc4b3608dd495abb5978a4b274
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9998

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://baarspo.ru/123?utm_term=android+8+huawei+mate+20+lite PDF link annotation
    • https://wujemalevimovud.weebly.com/uploads/1/3/4/4/134470439/fikisadidarala_jakuvemezereta_fedunuwokekipap.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459341/normal_5ff3b7470093a.pdfIn PDF document text
    • http://rawoxaxevog.mygamesonline.org/kedopugegigi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413454/normal_60307e8e36e74.pdfIn PDF document text
    • https://goxufosoxewuje.weebly.com/uploads/1/3/5/3/135300646/eae886b45eddb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490961/normal_5fe76db9351c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_6041972de039b.pdfIn PDF document text
    • http://momentshop.space/renabozri4.pdfIn PDF document text
    • https://pakunifa.weebly.com/uploads/1/3/5/3/135307874/memikobajedap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493195/normal_60355a13d31fd.pdfIn PDF document text
    • http://zememor.sportsontheweb.net/simple_subject_and_simple_predicate_exercises.pdfIn PDF document text
    • http://zoosalon.org/pursue_all_i_need_is_you_-_hillsong_worship_chordsbmd2i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489838/normal_600249ef48e97.pdfIn PDF document text
    • https://makezuxakoje.weebly.com/uploads/1/3/0/7/130739015/niriluzuwelik-lozesulimi.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/9636bd25-b3a4-44ff-bd8e-6548d86758df/how_to_reset_red_service_light_on_bmw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28cda614-efbe-4322-bf41-c755508a74ef/79103193257.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14280548-62b2-43a0-98a9-84e5b8aa966d/71101240021.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/846a2504-bef5-456e-b4cc-131019fc5682/susuzebupatakuva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96a06d04-7f2f-42e3-99f1-972dac5df8e5/how_to_apply_vinyl_using_the_wet_method.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000105b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105B8 5436 bytes
SHA-256: 1bb1806a843c295b37805f9a94007b5bf6b79a2ee9d1df3dfc52da9255deab86
font_01_sfnt_off00011817.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11817 10668 bytes
SHA-256: ac379d56d53f8b433d69b33bce759cf53d12847a3e4e5d9fb095d637e8b9e852

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