Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9afc661d455b0a2…

MALICIOUS

PDF

73.3 KB Created: 2020-12-20 14:04:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 53f0224b85b433c6ace9949f3e94e917 SHA-1: 57b8ce4a7da8f4aa8fee8e9b9770fe0d45ca5148 SHA-256: d9afc661d455b0a2b2b0dc887aa3c46efd5b9e25f9ccd48745ea78773130e5fc
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 0.9997

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
  • 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://traffmen.ru/123?utm_term=how+to+win+at+the+sport+of+business+pdf In PDF document text
    • https://vejugowe.weebly.com/uploads/1/3/4/5/134506523/081bb075.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365583/normal_5f8706e71edb1.pdfIn PDF document text
    • https://jutulomivepira.weebly.com/uploads/1/3/4/7/134775876/5122033.pdfIn PDF document text
    • https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/2745105.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393511/normal_5fa5372eaa553.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/vedexajawo/wikipedia_black_hole_information_paradox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22787a2a-e907-49e7-8d03-36591c2e67e3/perry_stone_study_bible_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5fa35a7-c990-4c08-a144-7b47a7bd4f5a/watch_iron_monkey_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f9d5cb0-e0cc-4320-bd08-35913c475f85/07_gsxr_750_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fa350df-78d0-43b1-a522-07057167db50/72414367295.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10dd611f6a419848684c6/t/5fc65b5608845d092463e272/1606835031298/beholder_2_lite.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e2393e8-69a2-43fd-b121-b62cfa4ef72d/estructura_de_lewis_so3.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d12d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD12D 5172 bytes
SHA-256: c565d252d4d03b2a54d9cc90cac7254f6edb8e4dc378e564e4bfd39feba1dd5e
font_01_sfnt_off0000e2b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2B8 11676 bytes
SHA-256: ff60d293dcd970096df10befe9d98e0310f8963d72fd7c15334326b23f9bf496
font_02_sfnt_off000109e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109E5 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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