Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c6ab3207305eda9…

MALICIOUS

PDF

75.7 KB Created: 2021-03-13 22:19:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d7adfc3b3817ddbbcf6e73c1041cfe6b SHA-1: 58a0e60f3ad2552a17390b825283a80802c40bb9 SHA-256: 6c6ab3207305eda9400fab52b98957252c5bad417265d7539b803dfaddc7c865
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous links to disposable domains and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were extracted, the PDF structure and embedded URLs point towards a tactic of directing users to external malicious content, likely for credential harvesting or further payload delivery.

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://ponafet.ru/strik?utm_term=latin+for+dummies+review PDF link annotation
    • https://cdn.sqhk.co/burajugi/clMsjhe/microsoft_task_to_do_list.pdfIn PDF document text
    • http://eurostore.info/personality_psychology_articlesly5xn.pdfIn PDF document text
    • http://goodxday.xyz/movojiduxofadarofoq3y.pdfIn PDF document text
    • https://cdn.sqhk.co/bobudozoke/jfjjbjc/49167705459.pdfIn PDF document text
    • https://cdn.sqhk.co/govazofaj/gUgdhfN/football_field_kick_cheats_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/xawodoze/vghjge4/84844380974.pdfIn PDF document text
    • http://naturwow.space/562718840275y9aa.pdfIn PDF document text
    • http://lakshmi-store.ru/luboxakutifowomovirilupmtakv.pdfIn PDF document text
    • https://cdn.sqhk.co/laguladori/jhidghf/kolkata_weather_report_for_next_10_days.pdfIn PDF document text
    • https://cdn.sqhk.co/kaxovugefulo/dgd8hdl/61673609116.pdfIn PDF document text
    • http://biomanix.best/603426033780jl6f.pdfIn PDF document text
    • http://chempion.coffee/dikupuxutowozinupxpz8.pdfIn PDF document text
    • https://cdn.sqhk.co/wibononuve/jhhhawy/among_us_mod_menu_always_impostor_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/bibolaned/ijhnjc1/avast_premier_with_crack_free.pdfIn PDF document text
    • https://cdn.sqhk.co/jifigetuxu/ekhchgY/55828120758.pdfIn PDF document text
    • https://cdn.sqhk.co/numavagoko/jibzyiw/idle_car_manager_cheat_engine.pdfIn PDF document text
    • http://summer-italy.fun/92909439821yaet5.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/eb07d57e-236c-46d2-a828-f2fe2bc4801e/ibn_battuta_au_mali.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adeee615-0221-40e1-b0b8-c27546afbbc7/25344071589.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_off0000e8cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8CB 5116 bytes
SHA-256: 69cc662f49a95491b466dd65810a41842b19647322acafcdf78e0071ca13940f
font_01_sfnt_off0000fa37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA37 11432 bytes
SHA-256: 84583b028d4f51d42812e91fe1e325ae63bf3f604c61454fc3eac3a8dab00069

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