Malicious PDF — malware analysis report

Static analysis result for SHA-256 f322f5ce553975dd…

MALICIOUS

PDF

65.0 KB Created: 2020-12-23 06:19:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 14d227502f6b86d4435dbb55683d93f4 SHA-1: 934635255950543ae9fabdb9b72dc236c537f664 SHA-256: f322f5ce553975ddccaea761a22b6ebbf449ed1ed93ba13bf787aac94f789751
194 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://traffmen.ru/123?utm_term=stericson+busybox+apk In PDF document text
    • https://static.s123-cdn-static.com/uploads/4408873/normal_5fca2576d97f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420260/normal_5fb3264869337.pdfIn PDF document text
    • https://fejajeger.weebly.com/uploads/1/3/4/6/134614243/41537e1d4062f12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374199/normal_5f93da7b5c762.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/5fc4c182e5c7695ca9b44940/t/5fd09b166cbf29106b0078ef/1607506711548/kan_marktplaats_app_niet_downloaden.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/993bb75a-a9a0-4acf-9af0-046e855e78a9/dojo_quest_arcade_game.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/xusafelobud.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5cb392e537a05ef2a8f72/t/5fc629a6173fb5383b75b120/1606822311309/luzotixonejumifu.pdfIn PDF document text
    • https://s3.amazonaws.com/gateme/cvs_application_job.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/006af95e-11fe-4137-a2fc-6f6e385e4fe5/5052323113.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05b5c0b7-6b76-48f8-a3c9-3d892cc0bf11/nikakizemige.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_off0000c0b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0B6 5372 bytes
SHA-256: 4dafffd63198b2a09758fd1f3a7bbe6504c4a99dacbd0b1092979006ef3aa920
font_01_sfnt_off0000d313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD313 10656 bytes
SHA-256: 7c76925438254e9ee5d5479959b83a89da308bb92829d558d0a88b96033f801e

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