Malicious PDF — malware analysis report

Static analysis result for SHA-256 d305f6957c686418…

MALICIOUS

PDF

93.1 KB Created: 2021-02-17 06:47:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 5f2ff30779c54fe404a07d5ff6b98fe7 SHA-1: 4845229c38651ed1299ae800fa81d23a006ba68a SHA-256: d305f6957c686418eaa5139712c49a90880e511fb99afbf31cc41f7eeb94370f
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains and link farms, a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful content.

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://jottigo.ru/strik?utm_term=mental+maps+of+reality+anthropology+examples PDF link annotation
    • http://girlita.space/alex_s_adventures_in_numberland2dzef.pdfIn PDF document text
    • http://instacopyrightcenter.com/minecraft_1.8_indir_team_extremef9kvb.pdfIn PDF document text
    • http://kfnwejfnkwheklf.space/bowel_cancer_screening_guidelines_nswanqxw.pdfIn PDF document text
    • https://fuvapevamasazu.weebly.com/uploads/1/3/4/5/134507747/aa7f80.pdfIn PDF document text
    • https://dopovubejaxow.weebly.com/uploads/1/3/4/0/134017692/5585497.pdfIn PDF document text
    • https://cdn.sqhk.co/kafufojugure/ehadgfl/3777052737.pdfIn PDF document text
    • http://yyyyyyhhhhh.space/constancia_de_no_derechohabiente_del_imssy5ikv.pdfIn PDF document text
    • https://cdn.sqhk.co/vekotevudoze/jehdgTj/abc_song_interactive_nursery_rhymes_cocomelon.pdfIn PDF document text
    • https://cdn.sqhk.co/tamaladafa/jjicjaZ/kuduremolopemuzoxovajufi.pdfIn PDF document text
    • http://uaportal.site/combined_gas_law_questions_and_answersbw7jd.pdfIn PDF document text
    • http://puxuwowu.iblogger.org/mafidudilik.pdfIn PDF document text
    • https://jitotapo.weebly.com/uploads/1/3/5/3/135314003/waxoton.pdfIn PDF document text
    • https://nojasiputijaze.weebly.com/uploads/1/3/4/8/134869787/xuwoza.pdfIn PDF document text
    • https://cdn.sqhk.co/vewimidipiv/3Ijim0v/background_eraser_tool_gimp.pdfIn PDF document text
    • http://aov.one/denefewowepuji0tn80.pdfIn PDF document text
    • https://nesajejegumexe.weebly.com/uploads/1/3/0/7/130776687/395086.pdfIn PDF document text
    • http://maska-respirator.shop/xoxakujajolusemp6w9.pdfIn PDF document text
    • https://runumoviw.weebly.com/uploads/1/3/4/8/134854062/1652125.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00013015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13015 5488 bytes
SHA-256: 912fe0ddad00d2bd4963082be0b838e9ae73013f0313a638f0ca58cb2b47c941
font_01_sfnt_off000142b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142B7 10800 bytes
SHA-256: 82771e8f6f654f1a0412e47182dc1c0f54640daae3326749e48b7c9e78ef2ef5

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