Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f8e256f39f1e0c6…

MALICIOUS

PDF

64.8 KB Created: 2020-11-11 21:36:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9bfec3981c270f29b28180ed7200272f SHA-1: 26b985fa1edbf80e66479d41462fb475ceeb8778 SHA-256: 9f8e256f39f1e0c6535371b850623df4ea6ad6550907079d9016a3989acb7f26
154 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 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
  • 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://gettraff.ru/strik?utm_term=windsor+clipper+duo+carpet+extractor+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367944/normal_5f89c44b789db.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/novifamigot/isc_2_cissp_official_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d790db8-3fd5-4143-8f01-94e1d263f0ac/fefezinigulofufidugak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a46b0b53-88b8-4454-9c1c-59c8a14be06e/xewidetakapanuzusovawike.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/60933201550.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/292e90ea-b6c6-4644-aec1-ded3641b8a61/91596982976.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/playstation_portable_apk_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/43190252635.pdfIn PDF document text
    • https://s3.amazonaws.com/pezofut/sport_cuts_hair.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5fc83a1-db00-4601-b6c5-a8e9593cbb9b/10899172839.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/48277864730.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/woxoz.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/29446267181.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b15e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB15E 5184 bytes
SHA-256: 641c447166d1661bbba6b3a28dc55413279b66964173dda6bf44f305be29a7a2
font_01_sfnt_off0000c2ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2EA 10332 bytes
SHA-256: 8459ed395ff9bec39d89f8b9b1e527620e592413c5ccd3c0e9d1d54f308bca60
font_02_sfnt_off0000e664.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE664 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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