Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0572d21f34f7c99…

MALICIOUS

PDF

71.3 KB Created: 2021-01-25 10:57:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: a5336c74a90d09aa6a363140abe4cc11 SHA-1: e61ea1fb722c112ac5b61f560d0837edba6a0c56 SHA-256: f0572d21f34f7c99748543d32772a90b93bde0e92890e3de89223859072b449a
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffmen.ru/123?utm_term=pulp+fiction+ezekiel'. Additionally, ClamAV detected this file as 'Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0'. The presence of multiple unknown URLs further supports the malicious intent, likely to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/123?utm_term=pulp+fiction+ezekiel In PDF document text
    • http://natlegend.space/802333821163bjb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383451/normal_6009e504f31cc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460723/normal_5fe385c1c763b.pdfIn PDF document text
    • http://hookup682.site/vasuxijorumusedexibd1fn8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379606/normal_5ff04658cf24d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481820/normal_5fd16f77a71dd.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/dazifozixawus/tifoj.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/cyberflix_tv_for_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/m._l._a_ka_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/43886223848.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/airtel_broadband_old_bills.pdfIn PDF document text
    • https://s3.amazonaws.com/waduzirader/australian_visa_form_80h.pdfIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/12019121905.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/south_movie_in_hd_new.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/subozufadadimoda.pdfIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/whatsapp_messenger_versi_baru_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/zuxoson.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 4

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_off0000dbae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBAE 4640 bytes
SHA-256: 636ecf05acd8e90cb494b8cef24c8fe270a76aed2efba4459419f17215f8ee56
font_01_sfnt_off0000eba5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA5 11188 bytes
SHA-256: ac61b42fd6110abca3fd0d50aa013b9a5f1022d2adba499b74118709d5c6bae0

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