Malicious PDF — malware analysis report

Static analysis result for SHA-256 964f9e135fa2192f…

MALICIOUS

PDF

80.7 KB Created: 2021-01-11 04:06:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: d54c06cea4169dbb983286b7860de712 SHA-1: 07db7e46daedddbbc3284e04aad75a8c8fbf3a95 SHA-256: 964f9e135fa2192f40481bc76edd71317f9463688f9eeed7f48bf1a91c8a9e46
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. The document body contains text related to a 'hue smart button app' and an embedded URL pointing to 'trafffi.ru', suggesting a phishing or scam attempt. The presence of PDF-specific heuristics further supports its malicious nature.

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://trafffi.ru/wb?keyword=hue%20smart%20button%20app PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4452618/normal_5feb9630549b2.pdfIn PDF document text
    • https://site-1217518.mozfiles.com/files/1217518/bafozuxotuve.pdfIn PDF document text
    • https://site-1176114.mozfiles.com/files/1176114/cake_decorating_kits_for_beginners.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401559/normal_5fa0c64a3b2e7.pdfIn PDF document text
    • https://site-1180550.mozfiles.com/files/1180550/woodworkers_depot_green_bay_wisconsin.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/baposivarabuj/hillcrest_thrift_store.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/menisuzesujime.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/busta_rhymes_break_ya_neck_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/bujulijixemubigi.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/50590432738.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/duvisezaw.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/33605155419.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/rosezazuxasegagazef.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/my_talking_tom_hack_mod_apk.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_off0000f598.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF598 2940 bytes
SHA-256: 5205dc029b2d4b0ae44ddd8c96d056e1801b9f6b3c115db4e44038fa36e83b83
font_01_sfnt_off00010024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10024 5036 bytes
SHA-256: 89af5d24fbd58405cbda77c3a88cf1c360ed9a2eabee8c441d9f3447517aa038
font_02_sfnt_off0001111d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1111D 10684 bytes
SHA-256: 1b0ddac945598b8bdeabdd657bf33db5f687cd664dba366332f428f35aed92c4