Malicious PDF — malware analysis report

Static analysis result for SHA-256 94b4269496c03523…

MALICIOUS

PDF

92.4 KB Created: 2020-12-23 22:13:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4b3c0daae1763ddbcc20483a8c31f39 SHA-1: 1974f4571cfac10efe7896e25bb742c983e633cf SHA-256: 94b4269496c03523c1e646583e55657f014ac2b2283580a9ed037802a17fcbad
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URL pointing to 'trafftec.ru' which is presented as a 'Dragon City breeding guide', a common lure for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/123?utm_term=dragon+city+breeding+guide+legendary+dragons
    • https://cdn.sqhk.co/fojufifef/A46gdbT/11811718825.pdf
    • https://cdn.sqhk.co/xivumatozo/SRvJ5jb/ketuvoz.pdf
    • https://cdn-cms.f-static.net/uploads/4402533/normal_5f92ecbd2fc85.pdf
    • https://cdn-cms.f-static.net/uploads/4385038/normal_5f9ee4b11610c.pdf
    • https://cdn-cms.f-static.net/uploads/4418587/normal_5f9d1cd2bdf06.pdf
    • https://cdn.sqhk.co/jiwejujorod/Fihgbif/59435858952.pdf
    • https://cdn-cms.f-static.net/uploads/4460694/normal_5fba6eae0ec51.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/ronenitevodo/zovasisemazijo.pdf
    • https://s3.amazonaws.com/mejados/70264743001.pdf
    • https://s3.amazonaws.com/kudowo/xapanitutedalev.pdf
    • https://s3.amazonaws.com/lakadutof/autonomic_nervous_system_activity_in_emotion_a_review.pdf
    • https://s3.amazonaws.com/pegebunov/bubble_answer_sheet_1-_25.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00013605.bin
fa1411c18f3afb5c4b72be59857c831e9c94b3c12a2434cc1482459522cd6141		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x13605 25972 bytes
font_00_sfnt_off0000fd88.bin
9a3c5225f9ebd03a94e02a347f7c07b72b10dc587cbbb51b224ea26b5496c1a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD88 5348 bytes
font_01_sfnt_off00010fca.bin
c8b5b64b7e76f320c6b9e3fbcedbc853474f9758699585e8aec82331492b0c1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FCA 11140 bytes

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