Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c740a8323e9349c…

MALICIOUS

PDF

66.7 KB Created: 2020-12-24 07:54:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: fd87e0f975c27217e75a161fdc84f6e5 SHA-1: 869699a8fa729c6b03a4dd18a9cce49588c9c1fd SHA-256: 0c740a8323e9349ca8cf3d9625872c677d7a90f24d25818988e25fa2b861794b
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 link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to malicious content, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • 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=jiffy+lube+live+old+name In PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/ditazobudeviki-sokeganozagaw-sufowuximaze.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387428/normal_5fd2a3ea208eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418984/normal_5fa8365f223c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367281/normal_5f9269aba1d35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412909/normal_5f954de82f2f2.pdfIn PDF document text
    • https://cdn.sqhk.co/zexukobesu/TxfjgF0/missing_persons_rate_by_state.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418584/normal_5f9b418c482e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403408/normal_5fcf4da684cf3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488133/normal_5fcb14e391951.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413986/normal_5fae18b2dfe8c.pdfIn PDF document text
    • https://gixawixo.weebly.com/uploads/1/3/4/3/134322292/jaxozezilig.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/d27aadaa-5dc7-49fa-85ce-c85a46f61ce7/suxulelelopit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72c18015-44c4-41ba-856e-3728d6991ec0/trisha_yearwoods_chicken_broccoli_rice_casserole.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a027ad34-3a9c-407e-a0cc-776c33c7f7a8/give_me_liberty_an_american_history_4th_edition_ebook.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_off0000ca0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA0B 5072 bytes
SHA-256: fc7ec55d0d355fb8c1db59805756e7432b70cf9858845b019f4820c23e996f5a
font_01_sfnt_off0000db52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB52 10304 bytes
SHA-256: 5a0a5a89b85a6575788ccff574f8facf98ab5a5f414123d332857625df5d8dfe

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