Malicious PDF — malware analysis report

Static analysis result for SHA-256 25d3d0a0a2ddb3c1…

MALICIOUS

PDF

62.9 KB Created: 2021-03-01 00:50:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: bd35b2edeb1c7c5a545885fde4f54a11 SHA-1: c94ee56421da9f68a6bc149cde1544c50519c86d SHA-256: 25d3d0a0a2ddb3c110ac3940c06826701b4496fe90050da0ea8e1d63053a0f3f
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 0.9998

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
  • 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://zajinet.ru/wix?keyword=kenmore+oven+model+665+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426960/normal_602d47f77c602.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454286/normal_603c1bcae6c33.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367277/normal_6007013121ffc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376372/normal_5fed506916d19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454300/normal_6024cfac40792.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408319/normal_6020c6cfc3403.pdfIn PDF document text
    • http://lolafoduluj.22web.org/fadebujituti.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455898/normal_6034219cc4ba9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408586/normal_60215dd853425.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374860/normal_602c59ac75e17.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470016/normal_5fdcde5d48d70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467955/normal_601ad2d3878b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469841/normal_601728402cdd1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452199/normal_5ffe09050a52b.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/vefagotoje/porter_cable_dovetail_jig_4210_parts.pdfIn PDF document text
    • http://bapibalapu.rf.gd/minecraft_free_trial_online_no.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_off0000bc3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC3D 5100 bytes
SHA-256: a7e4eb5c7b1dd9ada38553e7aa19a4f5beef94cf4c41124e4fe891bbf8ceb86b
font_01_sfnt_off0000cd8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD8C 9800 bytes
SHA-256: 79633b9a79ac0be0ff16447069447d7988f737474d4a36c9f08406ce262f355f

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