Malicious PDF — malware analysis report

Static analysis result for SHA-256 defc905c524f7cdb…

MALICIOUS

PDF

61.1 KB Created: 2020-12-02 13:02:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 651c68dfb8f17dc8b92a630d44274dc1 SHA-1: 9dacc4eec2e124861441f12735a0cde81adf3197 SHA-256: defc905c524f7cdb04cc5419a347ce321f3b79508c344ee7dc310db07453df0e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://trafffi.ru/strik?utm_term=bath+and+body+works+shampoo+bar PDF link annotation
    • https://zaxanedipujez.weebly.com/uploads/1/3/4/5/134582154/af5eaa84c72.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368788/normal_5f8b67e71dd8c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378604/normal_5faba66a746a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369775/normal_5f893b46025f5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454562/normal_5fc417357aeb6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461216/normal_5fc2bf7cbc032.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484997/normal_5faf3f12a185b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370057/normal_5fc48bc6baf8c.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/5fc1571bc30a162e0c558f21/t/5fc4d9c91972c46e3c35b7d4/1606736331174/lol_glam_glitter_puzzle.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1baba2cf09257bd71d527/t/5fc510fefa04221c71c044d6/1606750462260/clash_royale_strategy_for_beginners.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfa9872f8b574a0f33879/1606220440708/51477375435.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf8f273299f0c54399dd9/1606220022087/pikazesilo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd0e313ca23154c95dba23/1606225459110/89615996945.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c730ab7c-6229-46cc-810e-e6916bd983ed/38189770184.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fe534f6-4707-4e4e-b179-e06f0148b4b7/2684071747.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_off0000af65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF65 5612 bytes
SHA-256: 8208fa77aabb36227e6b758cf759a04b6cc2606546e80a8d94e4d1e40dd8d78b
font_01_sfnt_off0000c261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC261 10492 bytes
SHA-256: fd7bed15115ac6c018f63905415a68781d714a5f6cd47b4fdec1c1a81ac9fa9f

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