Malicious PDF — malware analysis report

Static analysis result for SHA-256 084e78c66e2347d6…

MALICIOUS

PDF

75.1 KB Created: 2021-01-01 11:40:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 6aa9b1b750d5bccda9c523c10cdb1369 SHA-1: 2fbd253710f7ec1a121de969456e73ea2e723b6e SHA-256: 084e78c66e2347d6ea5677b513e5d15b0e05ecc54b2102122259ecdfe602a6c0
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to a URL associated with 'willy wonka slots free casino cheats'. This URL is likely intended to phish or deliver a payload. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://cctraff.ru/strik?utm_term=willy+wonka+slots+free+casino+cheats In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366385/normal_5f88a5862d189.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468871/normal_5fc454e5d0bc1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393776/normal_5f8eadfdb03cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375086/normal_5f9b838f4b48b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425726/normal_5f9ff403a2bfa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388424/normal_5fca7fd38aa81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369920/normal_5f91033b80838.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384463/normal_5fb7c3ba9debb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474446/normal_5fe906d41b657.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415782/normal_5fb5479d3d81f.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/firigugixujotov/brewers_association_beer_style_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/ccsp_official_study_guide_2nd_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/disifuxaraterexokuso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee993ff6-b0a2-4c68-9f28-6a4906de0b80/rasevimed.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/zogegenefubo.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/area_of_triangle_using_sine_worksheet.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_off0000e733.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE733 5240 bytes
SHA-256: aae1b0caeae3999a9eeab873f394293c49f7d43a95a853fd6f239f316807b8fc
font_01_sfnt_off0000f920.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF920 11160 bytes
SHA-256: f52cda43ce2efa4a313801419a3ea00ab6c1d8276ad2c8a45fecc744d361856e

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