Malicious PDF — malware analysis report

Static analysis result for SHA-256 6687de5053d3563b…

MALICIOUS

PDF

77.6 KB Created: 2021-01-15 23:24:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 032cb3cc5c846d31b5e8ad64036a5092 SHA-1: 62a8f98a08288d25ef3559dc530bb1cfb5965845 SHA-256: 6687de5053d3563b59d5eae94acb3b320f504a8cc26e64d5fa49ba48b94bd9e2
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of an external URI pointing to 'trafffi.ru' suggests the document is designed to redirect users to a potentially malicious site, likely for phishing or to download further malware. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest an attempt to exploit users through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://trafffi.ru/wb?keyword=beast%20battle%20simulator%20free%20online%20game PDF link annotation
    • https://site-1178514.mozfiles.com/files/1178514/nejivoxinelobavawet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491669/normal_5fd0dab1204cd.pdfIn PDF document text
    • https://site-1174906.mozfiles.com/files/1174906/ufc_254_ppv_buys_predictions.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453335/normal_5fad11fbb178c.pdfIn PDF document text
    • https://site-1195473.mozfiles.com/files/1195473/3210482250.pdfIn PDF document text
    • https://site-1171990.mozfiles.com/files/1171990/jalurabekekalexas.pdfIn PDF document text
    • https://site-1177196.mozfiles.com/files/1177196/6819249299.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490752/normal_5fd65b05c8a11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391605/normal_5f8f76d095699.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
    • 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_off0000e58d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE58D 5156 bytes
SHA-256: 35438dd20f358ab2427cf366df2d359c265d60f4ce452c43586152bf02a08b5d
font_01_sfnt_off0000f6fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6FE 10640 bytes
SHA-256: bde2149ac5e9c006f7e2ea0aae502bae01ff3a447c21c81757b3954ee15dfa5c
font_02_sfnt_off00011b8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B8F 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f