Malicious PDF — malware analysis report

Static analysis result for SHA-256 9db61266e59000ba…

MALICIOUS

PDF

67.8 KB Created: 2020-11-22 04:59:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 5e3005fd2d7640a4f0706c16fb6556e8 SHA-1: 3bb408b2f43bdf94a6172aeb715b88cbab52adf1 SHA-256: 9db61266e59000ba66358e7973ae7e8a3dc57a6b5b02eba77cf42a9ff89d3195
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains an embedded URI pointing to 'trafftec.ru', which is likely used for phishing or to download a secondary payload. The document body, though heavily obfuscated, suggests it is masquerading as a technical data sheet to trick the user into visiting the malicious link. No scripts were extracted, but the presence of external URIs and the ML detection strongly indicate malicious intent.

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
  • 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/aws?utm_term=crestron+am-+200+data+sheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369502/normal_5f99a73829ef3.pdfIn PDF document text
    • https://tokunebejuz.weebly.com/uploads/1/3/4/3/134323577/taradasom.pdfIn PDF document text
    • https://gipegilut.weebly.com/uploads/1/3/4/6/134699389/latim_xepomexofe_zegadob_pasubage.pdfIn PDF document text
    • https://vezidinudavad.weebly.com/uploads/1/3/4/4/134481570/552626.pdfIn PDF document text
    • https://wonigebegi.weebly.com/uploads/1/3/1/6/131606731/xolube.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365639/normal_5f90146cde3d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366377/normal_5f986a328fb1b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374699/normal_5f9c04bd5784e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464996/normal_5fb99ef729a5d.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/4538b70c-ad34-45c7-9bc3-46351d05abdf/double_homework_episode_12_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5869f3ba-7d8a-4cdd-a73e-e96016fe5ad4/70926133175.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88d96953-57f9-4a5b-9e0f-0b29a953cc9a/nemanowasumetijugi.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_off0000c9d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9D2 5244 bytes
SHA-256: fea107133eec3fadd59be664793fa5e086eefb0509b25468c549895c51fb4843
font_01_sfnt_off0000db75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB75 10980 bytes
SHA-256: e3328e30441339f629980f52066c73273755417b70bebd18a0c18b1d0172fe2e