Malicious PDF — malware analysis report

Static analysis result for SHA-256 59e9a1295a7e6d4b…

MALICIOUS

PDF

95.5 KB Created: 2020-12-21 23:49:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: b3de1930268e1926009dbe7fdfaf7972 SHA-1: 7259eade153e75aa725aab2121b8d1a7969668be SHA-256: 59e9a1295a7e6d4b8b9f5eed5f3282cfdb7e010fe8a0b9ae83409f73ee3bd240
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'trafftec.ru', which is a strong indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely as part of a phishing campaign.

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://trafftec.ru/strik?utm_term=boxing+combat+otaku PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366308/normal_5f886c7ccb9df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422918/normal_5f9c65e789277.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403817/normal_5f91c03fc6fe1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367277/normal_5f88295644dc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366335/normal_5f8764a8e935e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373769/normal_5f9010d48a50a.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/fab04705-1eaf-4057-a960-ca5852e44576/sivujemelolijarite.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3799d60f2895dc1f82192/t/5fd1e18cf2ee360040fb3a79/1607590285145/shadow_battle_2._2_hacked_version.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/efectum_pro_apk_1._9._8.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/critical_ops_latest_apk_mod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/930a316f-0c3e-4301-b1d3-403e804c830c/gasowoxisusidipi.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/logo_design_web_template.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f870.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF870 21160 bytes
SHA-256: 8cbb32fd743077a635ad8819cb8fe7a68793b993f2b7f23a19cb7ba2bc8a3d5e
font_01_sfnt_off00013b4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B4F 5132 bytes
SHA-256: 563de44bc466f77f096f37005e151548958706a5dc0c48b3ba07f01677b746e2
font_02_sfnt_off00014ccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CCF 10660 bytes
SHA-256: 2ce47fac0a0306d06d37b8b700bd2fca81c8887a8d8962ecd30625ac522e2274

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