Malicious PDF — malware analysis report

Static analysis result for SHA-256 c47ebe3967b47f6f…

MALICIOUS

PDF

517.6 KB Created: 2020-11-20 08:15:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 816688d6b89321d856451ca45871eab8 SHA-1: e59c7034612894b4c02dfa0256f2643655954d7d SHA-256: c47ebe3967b47f6f624b0cdd663a8593d28f81a771d7eb3757a06d08781abc21
104 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The presence of an external URI pointing to 'traffnew.ru' and heuristic findings related to urgency lures suggest a phishing attempt. While no scripts were explicitly extracted, the PDF format can embed JavaScript, which is often used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9449

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/aws?utm_term=championship+manager+2001%252F+02++mac PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421787/normal_5fa91c6616744.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425224/normal_5f9e09ba1a414.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/safago/boardroom_suggestion_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tobovunoberiki/18057227260.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/wasatuzudubadevuzonot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f7cbb85-5bbf-4bb9-a7b7-00baec708841/towuxugup.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/pagatisojojogulokip.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/54629531809.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94715254-31fb-4c48-a37c-d72bf700edd3/48456886239.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/56047265289.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/rimez.pdfIn PDF document text
    • https://s3.amazonaws.com/vabemavuputenif/fokizonogatavikir.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0007b0d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B0D5 5580 bytes
SHA-256: 5b503acd330e9ec3a97b212c0b08361f901879e510c7bd5f78f16ee30b95014c
font_01_sfnt_off0007c3af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C3AF 15812 bytes
SHA-256: 8341536770d698a96f5028063ff78a1913f0e73032c7f575927b96ab49394e29
font_02_sfnt_off0007f21a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F21A 16060 bytes
SHA-256: 4ef9506ee11a349461550e6b437e3786686b598308a87786035880d16624999d

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