Malicious PDF — malware analysis report

Static analysis result for SHA-256 8942bda1a1b63861…

MALICIOUS

PDF

81.6 KB Created: 2020-12-26 11:54:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 0e468261a5c4781e0ff1a6c471606894 SHA-1: c6d34429a7b7a9373801a5e6ac71aeca65446586 SHA-256: 8942bda1a1b638611f105c2c36931e4b76de2750e44fe4fa5714a3acabf4e1ba
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://traffmen.ru/123?utm_term=angeletta+skin+cream+ingredients' is the primary indicator of this malicious activity. While no scripts were explicitly extracted, the PDF structure and the malicious URL strongly suggest an attempt to lure the user to a harmful site, consistent with phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=angeletta+skin+cream+ingredients In PDF document text
    • https://cdn-cms.f-static.net/uploads/4471959/normal_5fa84b1f59446.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448976/normal_5fa867a9a9662.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370767/normal_5fb2a68a2d0c7.pdfIn PDF document text
    • https://cdn.sqhk.co/sononipo/RNZvvO7/bewusina.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418584/normal_5f9f8ea9464a1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9dacba17-70d8-433b-a913-57f89b47f4b9/nugefesalebulizomuxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e23cf7ef-c6d0-4c4a-961e-2fddc4941e6e/chicken_chalupa_taco_bell_calories.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16771e41-e141-451d-abbd-aab6f48736a1/magikakipisusixipubunojiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e093807-d8c4-46c4-8483-658f5c3a5675/ffbe_war_of_the_visions_wiki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1f5b55b-950f-4847-b269-c3880047c010/vutozapunabas.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_off00010016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10016 5312 bytes
SHA-256: a7cbf12b1beb97302f79a479389913d23ad07897ae6efd3d77277ba68402bfb2
font_01_sfnt_off00011212.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11212 11720 bytes
SHA-256: 76f2c4750030c7bf8a448c2315a3c8d4bb375d5afbc2eb47132edf5460584751