Malicious PDF — malware analysis report

Static analysis result for SHA-256 554c1142f73c5b5a…

MALICIOUS

PDF

69.1 KB Created: 2020-11-27 08:19:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 7fd9e22fb57f873763b90825c5caed59 SHA-1: 3ced20cd7a8193675078afe0189235d3ab5160bf SHA-256: 554c1142f73c5b5aa5d7253f8711e1291d6dafaa927371a2143bdabd023fec9e
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'traffnew.ru', which is likely used to deliver a secondary payload or conduct phishing. The document body, though heavily obfuscated, appears to be related to vehicle maintenance, a common lure for social engineering.

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://traffnew.ru/strik?utm_term=2000+chevy+s10+transmission+fluid+capacity PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381529/normal_5f93d14468bd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455405/normal_5fbb0d7345cff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456387/normal_5fa568c35a61b.pdfIn PDF document text
    • https://tuvitewolejuxow.weebly.com/uploads/1/3/4/6/134615754/gojodipu_wubipeze.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367927/normal_5f8df9608dba3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475571/normal_5fab98cecdfbc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/43780074-22aa-4ae0-a27d-1870f346a55c/13589133234.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80d87502-b1f0-41e8-983a-a04a82f68714/gopifim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5446ab13-01e1-4df9-aebe-676c14a9dfe7/aaron_shearer_classical_guitar_technique.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9ecac6b-4c8a-419b-ab11-7b206f2972f4/kipapusopujepefow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffac3ce1-e7c9-4888-ad15-9c3e98bc2f5e/kakusiko.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_off0000c465.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC465 5668 bytes
SHA-256: 5a40365298f6245fa7af92dac05251a69c6792afb7698c8cd5ea6be90b42a7a1
font_01_sfnt_off0000d785.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD785 9912 bytes
SHA-256: 89cfe521ea0a5c4c2801b5dfa6a2d19142af9e10c320a3994b6a3ab0de8270f4
font_02_sfnt_off0000f983.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF983 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361