Malicious PDF — malware analysis report

Static analysis result for SHA-256 472bcffa5cfa2577…

MALICIOUS

PDF

67.6 KB Created: 2020-12-30 03:33:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b073ab2344fa3b798197b41aec5cdc2f SHA-1: 36bc2bd4291a744758e76581a4e5e247b586bff3 SHA-256: 472bcffa5cfa2577eabfd0b1681d103c68bc16812391a4ad83c091bd68a0a4bd
174 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains a malicious link disguised as a Roku remote replacement offer, likely leading to a phishing or scam site. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs 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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://cctraff.ru/strik?utm_term=roku+stick+replacement+remote+model+3800x In PDF document text
    • https://sizuginoten.weebly.com/uploads/1/3/4/4/134490660/5716874.pdfIn PDF document text
    • https://cdn.sqhk.co/vuxeneson/iaiiJVy/rerudit.pdfIn PDF document text
    • https://nipetetoxijekuj.weebly.com/uploads/1/3/4/7/134718304/5600c8a56328d.pdfIn PDF document text
    • https://sixifemawo.weebly.com/uploads/1/3/4/4/134470876/vijedaz.pdfIn PDF document text
    • https://tazusarativiwu.weebly.com/uploads/1/3/4/5/134510609/tixisiberuxawewo.pdfIn PDF document text
    • https://cdn.sqhk.co/tuseliwi/hg7NGhv/first_recharge_mobile_legends.pdfIn PDF document text
    • https://cdn.sqhk.co/dodazija/ijehghb/zevesidava.pdfIn PDF document text
    • https://cdn.sqhk.co/fetadupozo/w5gfWDW/plants_vs_zombies_2_garden_warfare_ps4.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwibagula/Aqgiia5/99508377516.pdfIn PDF document text
    • https://cdn.sqhk.co/xobitabab/hcuihhg/cissp_domains.pdfIn PDF document text
    • https://takimibovejexi.weebly.com/uploads/1/3/4/5/134512521/gewawifatunarajixuvo.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/a333e00f-93aa-47a9-8feb-3ad08a19f886/dvoretskys_endgame_manual_5th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ef49df4-f7dd-44aa-b4a7-da1c4835bff1/35865298280.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c789.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC789 5856 bytes
SHA-256: 09f2de1c756ec6aaf2ca36e4addf8ecbb7f3cb156389a45f6cb022ec9f4de21a
font_01_sfnt_off0000db6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB6C 11196 bytes
SHA-256: df4b4c021f683faa99890090f9ec512ecff741e5d3afdb6888856de1e70fb27f

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