Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6ff92714602ce9f…

MALICIOUS

PDF

70.1 KB Created: 2020-12-15 04:36:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 9ca136a30eacd671004e3d168fbeec19 SHA-1: 4d4864749fba35d61949dfaff2b07220ce645012 SHA-256: d6ff92714602ce9fbfb25aa9f37426ce0625e4c6ec30f0223ad4bc5641bc1245
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. The PDF contains a link farm with numerous external URLs, one of which is `https://traffnew.ru/123?utm_term=dios+mios+lite+2.11+download`, suggesting a phishing or malware distribution attempt. The presence of embedded links and the overall structure point towards a social engineering tactic to trick users into visiting potentially harmful sites.

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://traffnew.ru/123?utm_term=dios+mios+lite+2.11+download PDF link annotation
    • https://dutajidadu.weebly.com/uploads/1/3/4/7/134730474/c62ab695cfd.pdfIn PDF document text
    • https://tadivibudup.weebly.com/uploads/1/3/4/8/134899420/9464243.pdfIn PDF document text
    • https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/7025f8b8a2.pdfIn PDF document text
    • https://vabebixeteguju.weebly.com/uploads/1/3/4/2/134234611/parewifasili.pdfIn PDF document text
    • https://gotedimonov.weebly.com/uploads/1/3/4/7/134761190/zalumakawi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc2865612facd59ceb7382b/t/5fcbf204662d5e24e08b126a/1607201285190/tips_trials_frontier_cheats.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23d410f9-47f6-4110-a7c2-fa98df84f6c0/geometry_textbook_answers_chapter_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/656eef9c-83a9-414d-b1f0-9f3cd872bc21/half_ass_synonym.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc65c44d49dd1244759b117/t/5fd04b9c3364176a1258275c/1607486365126/futelunupo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5ac66c6d964583642a1a4/t/5fc73637bfb90028be4d46ee/1606891063759/cartelera_cinemark_ecuador_mall_del_sur.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd09eaec0a1d2b4e576865/1606224363165/8934461373.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fdda3e6-7653-440a-bb90-69e252f718d9/18129932098.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4facdec917750a3f1d86e/t/5fc5582e18e72e5fdb89f9c3/1606768687000/fogagikisakowi.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_off0000cde0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDE0 5180 bytes
SHA-256: b8552afca9aae925bf31c5964ccb8457569d26601b65129ceceff698341022c8
font_01_sfnt_off0000df8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF8C 14064 bytes
SHA-256: ff71d2cebbc9b548551ecfac68d5680add1d08a99c0d7b3e0e3491f0ef09fe06

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