Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f35111d4510a4f5…

MALICIOUS

PDF

77.8 KB Created: 2020-12-28 06:27:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: a7edfb52142316b2d212baec01a83b23 SHA-1: 6188b40b14493d82668cc5d784dfff96a19f365e SHA-256: 0f35111d4510a4f5023f9bf33ff522df3d94099b1e64491d022a6263e1fd15ce
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 0.9998

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://gettraff.ru/strik?utm_term=gartner+rpa+magic+quadrant+2019+pdf In PDF document text
    • https://cdn.sqhk.co/vakanaju/Jhjjgjg/48155372490.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417405/normal_5fc2bc2ae588b.pdfIn PDF document text
    • https://vawuwoteb.weebly.com/uploads/1/3/0/9/130969488/4326714.pdfIn PDF document text
    • https://cdn.sqhk.co/zazavoxujub/giFjbke/sosevetuzomago.pdfIn PDF document text
    • https://cdn.sqhk.co/bibunifez/ggjFxib/snake_eyes_piercing.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368477/normal_5f885f69da4b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382789/normal_5f97fcbb4abd2.pdfIn PDF document text
    • https://bunemevomuw.weebly.com/uploads/1/3/4/7/134733911/e00b49b6242.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496005/normal_5fac074eb868e.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/063095b0-7b8a-4f8e-a4e8-3942d6e1cdc7/every_15_minutes_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/gijifupebefubisutemuk.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_off0000efd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFD8 5904 bytes
SHA-256: 45cb194af3d2a7f38ebaa8df791b743dbc83dfa327244a792bd12bc93df3d2f1
font_01_sfnt_off000103e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103E1 11200 bytes
SHA-256: 5700672d7ff519de80488694ab320be66076516af2f4d26668cf721cce6e561b