Malicious PDF — malware analysis report

Static analysis result for SHA-256 dca1db62aadb7569…

MALICIOUS

PDF

82.2 KB Created: 2021-03-20 23:59:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 86fdf7d5c665c436eeaf839bc74fa166 SHA-1: 92d737fee11939757db6aa02e120d80ade85853f SHA-256: dca1db62aadb75692598d936975caa6d18173acad27e7be4c21b78eb42d5555f
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 0.9996

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://lozipotod.ru/strik?utm_term=the+upside+of+unrequited+plot+summary PDF link annotation
    • https://cdn.sqhk.co/xekobigi/ibkibn1/zakarapifomixutude.pdfIn PDF document text
    • http://metalllift.ru/download_mp3_kumpulan_surah_juz_306px22.pdfIn PDF document text
    • http://phrensy.co/8775087353119e0g.pdfIn PDF document text
    • https://cdn.sqhk.co/gidulikegel/gfRXDOS/44274173784.pdfIn PDF document text
    • http://replyua.site/polojekodufogafupupu16m7t.pdfIn PDF document text
    • https://cdn.sqhk.co/kugorazig/0Xib3hf/muwuja.pdfIn PDF document text
    • http://momentshop.website/doxugoxaremeyjx5v.pdfIn PDF document text
    • https://cdn.sqhk.co/sofilita/gjib9vH/lion_king_remake_runtime.pdfIn PDF document text
    • http://donbetosstreettacos.com/739899234883qjc8.pdfIn PDF document text
    • https://cdn.sqhk.co/vojeruzujuzi/s5hdigl/sutexixidetafogir.pdfIn PDF document text
    • https://cdn.sqhk.co/baxalelizop/cjfzjjT/igcse_biology_paper_6_model_answers.pdfIn PDF document text
    • http://betmoy54.com/mathematical_puzzle_questions_with_answersvn932.pdfIn PDF document text
    • https://cdn.sqhk.co/noloxunipe/8U3ugcN/1266241239.pdfIn PDF document text
    • https://cdn.sqhk.co/rutesawir/IicQhiJ/5153433950.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424011/normal_6011b2bea7373.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377116/normal_604ab2a2ef311.pdfIn PDF document text
    • http://redit.fun/sony_bravia_remote_codes_for_comcastwl3lj.pdfIn PDF document text
    • https://cdn.sqhk.co/nilamemiw/iihigdd/avengers_game_xbox_one_walkthrough.pdfIn PDF document text
    • https://cdn.sqhk.co/geruvijiwiw/bqgJHXJ/affirm_walmart_in_store.pdfIn PDF document text
    • http://lamovingcompany.com/eugene_schwartz_breakthrough_advertisingyfldd.pdfIn PDF document text
    • http://vezerfa.xyz/why_is_diesel_engine_so_noisylg76y.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f67c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF67C 5340 bytes
SHA-256: aaa459afdb64326ab96f9a3a9a450a3a579d12b9912f8e1d9cc885001245a39a
font_01_sfnt_off00010871.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10871 10748 bytes
SHA-256: 7561dbbfaece13c2fe638ccc95b8a2f7be38b9be66a0f4f964223e72a3156d92
font_02_sfnt_off00012d44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D44 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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