Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f006f02a449d76…

MALICIOUS

PDF

76.2 KB Created: 2021-03-04 03:40:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d12644dab224a726a002ca4f759d2664 SHA-1: 544a71635caefbef65040bc105ac3a67ffc2908b SHA-256: a4f006f02a449d762a00965016405190bd607203dd336507add40af670507bd7
126 Risk Score

Malware Insights

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

The PDF contains an embedded URI that redirects to a URL associated with a portable air conditioner search term, indicating a lure. The PDF is also flagged as a link farm on disposable hosting, suggesting malicious intent. ClamAV detection and ML classification strongly indicate this is a malicious PDF, likely used for phishing or malware distribution.

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=lg+portable+air+conditioner+8000+btu PDF link annotation
    • http://detonic-romania.website/979190937252f7cq.pdfIn PDF document text
    • https://cdn.sqhk.co/rajunakeb/gchajht/tixadojomexota.pdfIn PDF document text
    • https://cdn.sqhk.co/reriwoduriju/xgfgfgj/71589706087.pdfIn PDF document text
    • http://love-cosmetics.shop/simple_infographic_template_word56rsq.pdfIn PDF document text
    • https://cdn.sqhk.co/pevelefotuve/VBSkLRl/basketball_toenails_falling_off.pdfIn PDF document text
    • http://proita.fun/frostpunk_console_commandso8h4d.pdfIn PDF document text
    • https://cdn.sqhk.co/mivesumor/dicijhH/33631481450.pdfIn PDF document text
    • http://wwwbcpzonasegura-viabcp.com/68161979844ih9fe.pdfIn PDF document text
    • http://metazoaapc.fun/48927108490anap3.pdfIn PDF document text
    • https://cdn.sqhk.co/tibatojo/fjiUM5Y/kufididapo.pdfIn PDF document text
    • http://discout.online/router_d_link_dir_825_ee_ac1200_manualu5fm5.pdfIn PDF document text
    • http://ig-copyrightnotice.com/299225187608okoi.pdfIn PDF document text
    • http://navaram.online/hackerrank_mcq_questions_with_answerst5biz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/gikazeleluw.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/whatsapp_gb_2019_atualizado_uptodown.pdfIn PDF document text
    • http://karifopiti.epizy.com/telegram_bold_text_android.pdfIn PDF document text
    • http://puviwozizasi.rf.gd/39802843985.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/ariella_arida_miss_universe_question_and_answer.pdfIn PDF document text
    • http://gedamodeges.epizy.com/blank_frayer_model_template.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_off0000ed67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED67 5480 bytes
SHA-256: af7f6d32cea00b50478a216ec2f042a6707872e5e700f1857ca3e86660e19e6d
font_01_sfnt_off00010013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10013 10348 bytes
SHA-256: 37f491f274154bc692efae8633f6b2e274ec66559c16577586d156e6e9e772f2

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