Malicious PDF — malware analysis report

Static analysis result for SHA-256 e833a9d9dbf8db94…

MALICIOUS

PDF

73.9 KB Created: 2021-01-08 04:45:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 8a41919224a92351509a23437ce5071c SHA-1: 948b1698e7ac4aa72f68ab998ab6e5e8b1ece529 SHA-256: e833a9d9dbf8db94b9e4508e7842c260e45d355e6f96bec99493a6d834926f03
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'traffine.ru', which is likely used to redirect the user to a phishing or malware distribution site. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of external URLs strongly suggests a malicious purpose.

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://traffine.ru/123?utm_term=frog+on+lily+pad+clipart+black+and+white PDF link annotation
    • https://cdn.sqhk.co/momebuman/4hcrDrA/final_fantasy_tactics_characters_guide.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474734/normal_5fbcef8267f6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481994/normal_5fae25f76a321.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375522/normal_5fe15c67c297f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483359/normal_5fc2fab3e226b.pdfIn PDF document text
    • https://cdn.sqhk.co/wufevinek/oNyj9ja/83702575862.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422148/normal_5f9d929b9808a.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/a951f301-8062-46f1-bfef-aaf927fa6795/real_steel_champions_unlimited_money_and_gold_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/zewupijumovevedudi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/816dbea4-36e1-4fc1-a5e0-1c13c66eaee9/camera_magic_trick_app.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/ranedobonosabuxusaw.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_off0000d6af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6AF 5300 bytes
SHA-256: 5479d16d615291e052f7ead3e99e6fa747fd806d88597a7a339efe674eb2ffac
font_01_sfnt_off0000e8c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C2 10556 bytes
SHA-256: 209cca67396adaaaa96d0f14e91cad83ed63c3326247e40473be7b949c8c7cd2
font_02_sfnt_off00010cbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CBC 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f