Malicious PDF — malware analysis report

Static analysis result for SHA-256 4035ed7da53c780f…

MALICIOUS

PDF

78.9 KB Created: 2020-12-04 02:05:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 37a3fd07a46953d6fcb3b22e73541a05 SHA-1: d5a692cd3349dc54e54e213283d3b55e65a49fcf SHA-256: 4035ed7da53c780f8b7b0e3c2becbf01c83851e8d108b0b2e2c26ea21df80a59
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL pointing to 'traffking.ru', which is flagged as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'pathfinder builds', suggesting a phishing or social engineering attempt. The presence of external URIs and the overall malicious verdict strongly indicate this PDF is designed to redirect users to a harmful site.

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
  • 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://traffking.ru/strik?utm_term=interesting+pathfinder+builds
    • https://cdn-cms.f-static.net/uploads/4496597/normal_5fc11e55ebceb.pdf
    • https://cdn-cms.f-static.net/uploads/4368741/normal_5f99181cdf4b7.pdf
    • https://cdn-cms.f-static.net/uploads/4425533/normal_5fa80a90e995d.pdf
    • https://cdn-cms.f-static.net/uploads/4370080/normal_5fc37446bc020.pdf
    • https://cdn-cms.f-static.net/uploads/4367642/normal_5f875269cd5a6.pdf
    • https://cdn-cms.f-static.net/uploads/4367278/normal_5f9063a285f6b.pdf
    • https://cdn-cms.f-static.net/uploads/4413226/normal_5f94e34c2d3f0.pdf
    • https://cdn-cms.f-static.net/uploads/4443598/normal_5fb2850e25f82.pdf
    • https://cdn-cms.f-static.net/uploads/4456387/normal_5fbe75be7d131.pdf
    • https://cdn-cms.f-static.net/uploads/4369174/normal_5f879f711aaf7.pdf
    • https://cdn-cms.f-static.net/uploads/4482407/normal_5fa971fce1a67.pdf
    • https://cdn-cms.f-static.net/uploads/4451217/normal_5fa4bd26b3cd4.pdf
    • https://cdn-cms.f-static.net/uploads/4476595/normal_5fabc9be920a0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc7b5f5c43b1711988c5762/t/5fc923ef348331349f2370fb/1607017458063/arizona_shooting_2020.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7b8.bin
22217956f1550eb2e85d0aa28beb58895d05d2ed6fc76eff8023cdf1014beb5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B8 5380 bytes
font_01_sfnt_off000109f8.bin
704cf95cf478de20dddd4905a6a9eb7874b15bed78184b22c588eb9fc10f6832		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109F8 10900 bytes

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