Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0f3f1207fe04331…

MALICIOUS

PDF

65.0 KB Created: 2020-12-29 11:48:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 508bc1aea682ac48b7837b9ef33d4cf4 SHA-1: 1d88062f34a4e2f02a567ebe393d579727e839a0 SHA-256: f0f3f1207fe0433108ef5ac367f0bbeb2784e5245f55cdfbdd1395d15c56d13f
154 Risk Score

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 0.9995

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://gettraff.ru/123?utm_term=cavern+of+souls+proxy In PDF document text
    • https://cdn.sqhk.co/kilatelazobe/1ha1Oij/face_masks_for_kids_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/zexukobesu/z25geji/lolusunobilutobisutefaj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410030/normal_5fc89660adab1.pdfIn PDF document text
    • https://nawivavunof.weebly.com/uploads/1/3/4/6/134669961/b2ebcc995dde5.pdfIn PDF document text
    • https://cdn.sqhk.co/ribegibonot/VDRxYpx/best_pickup_truck_philippines_2015.pdfIn PDF document text
    • https://midazumetewafaj.weebly.com/uploads/1/3/4/2/134266273/pusobevu_jizawusosimarid_kegebujegaz_papobevi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411923/normal_5fe00040cee17.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/16fb7b1f-709e-4020-b5da-39e71467b646/kajulakoxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f47704d1-8fc4-4b58-a194-b16ab6bdd6b0/bee_syrup_mixing_chart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c6dcdbe-f1e9-4b2f-aae5-ff030e34154c/39435120263.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_off0000c30e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC30E 5032 bytes
SHA-256: 2e81fa28c9d86976237ecb80c94b4db9553e43cb3f203cdaae1d12d3a5d6974e
font_01_sfnt_off0000d44b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD44B 10336 bytes
SHA-256: 6487123b8d2b29feb2433e243ca9e335e3cb9e00d17dc1d8a93c775c3deeae4b