Malicious PDF — malware analysis report

Static analysis result for SHA-256 289ca2e78272802a…

MALICIOUS

PDF

71.9 KB Created: 2021-01-12 14:42:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 0c16b60754fa21301d86336932782f6f SHA-1: ff05030288c907a6804863e3fadf3af73f088911 SHA-256: 289ca2e78272802ad78bcebe8e4cd03717aff06ee249ac05bc0b429adcf6556b
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, indicating a phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URL point towards a phishing lure designed to redirect users to malicious infrastructure.

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://cctraff.ru/aws?utm_term=st+bedes+redhill+uniform+shop In PDF document text
    • https://cdn-cms.f-static.net/uploads/4460060/normal_5fb47e157b3a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471969/normal_5fdb5a853932c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446651/normal_5fa624097ed90.pdfIn PDF document text
    • https://site-1178235.mozfiles.com/files/1178235/fireboy_and_watergirl_2_walkthrough_level_34.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393635/normal_5fcdc381a4c4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472763/normal_5fad91a417466.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/gfpheji/hop_color_ball_3d_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388293/normal_5f8e888f49d44.pdfIn PDF document text
    • https://site-1176685.mozfiles.com/files/1176685/88412184685.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402712/normal_5f927555b2b4e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417226/normal_5ffb54d086c89.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445735/normal_5ff6bfd666a27.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452385/normal_5ffbe55a4c6c0.pdfIn PDF document text
    • https://site-1168003.mozfiles.com/files/1168003/messenger_latest_version_apk_uptodown.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447915/normal_5fba6c812aeb0.pdfIn PDF document text
    • https://cdn.sqhk.co/sovokeduseb/ghl13hd/62601779803.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dc0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC0E 5312 bytes
SHA-256: 16ed0f62a4ae9d7893c6fe4e8dfb1f188969abe9f9f384e54e660adb7d36b3b2
font_01_sfnt_off0000edf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDF1 10852 bytes
SHA-256: 1b31c44ba70c34e17499aa6ae543964d5c0ff5192da384aa79eb9abb1f475a9b

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