Malicious PDF — malware analysis report

Static analysis result for SHA-256 f46c94e06c1c6044…

MALICIOUS

PDF

70.8 KB Created: 2020-11-29 08:15:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3571e81ae54036ab609c1f723b0e3969 SHA-1: 11e3751200aad8fcaab539243fbad787f7063f36 SHA-256: f46c94e06c1c6044dffb2c3b5c997456f478658f82e7336a35557571a1026b4c
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by multiple engines, including ClamAV and an ML classifier. It contains numerous external links, suggesting a link farm or phishing attempt. The embedded URL 'https://traffine.ru/123?utm_term=death+of+the+family+joker+face+cut+off' is a primary indicator of malicious intent, likely leading to a phishing page or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffine.ru/123?utm_term=death+of+the+family+joker+face+cut+off
    • https://cdn-cms.f-static.net/uploads/4380223/normal_5fb825c4b68aa.pdf
    • https://cdn-cms.f-static.net/uploads/4418788/normal_5fa91e38027d3.pdf
    • https://cdn-cms.f-static.net/uploads/4418590/normal_5fa975970aeea.pdf
    • https://cdn-cms.f-static.net/uploads/4368235/normal_5f99e2dcdfcdc.pdf
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/6131267.pdf
    • https://cdn-cms.f-static.net/uploads/4389394/normal_5f9a62f6ae865.pdf
    • https://cdn-cms.f-static.net/uploads/4380395/normal_5f93ca19d86df.pdf
    • https://cdn-cms.f-static.net/uploads/4485299/normal_5fc2d810a5402.pdf
    • https://cdn-cms.f-static.net/uploads/4407733/normal_5f964f7112a3e.pdf
    • https://tiluzapibijodok.weebly.com/uploads/1/3/4/2/134265907/c8170464c176e.pdf
    • https://bunuterujizid.weebly.com/uploads/1/3/4/8/134882333/surifakudurav.pdf
    • https://cdn-cms.f-static.net/uploads/4393883/normal_5f93408011a74.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/1141d94d-3309-4b0f-82b3-b9343b9a6879/gamurena.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb24.bin
f6f7c099480dcb1f26844b0c54c2c99776fb801948eabbfcc10d80e7dcfbbf4a
pdf-font-stream PDF embedded font (sfnt) at offset 0xCB24 4960 bytes
font_01_sfnt_off0000dc22.bin
4402b5e718b67cfe27700c60e9440acd7082ded6e8cc2ed5f38f167aef2632e3
pdf-font-stream PDF embedded font (sfnt) at offset 0xDC22 10588 bytes
font_02_sfnt_off0001006c.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x1006C 4324 bytes