Malicious PDF — malware analysis report

Static analysis result for SHA-256 698d1699cba62b60…

MALICIOUS

PDF

69.3 KB Created: 2020-11-14 00:06:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45043f45cf043863f6eceb2775a10867 SHA-1: 78fbc32a9bb15613d91980c16310a265765b5f66 SHA-256: 698d1699cba62b60a86c48fcc71b1664d298d3cc8f6563fd6137cf56ed63d40b
96 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. It contains an embedded URI pointing to a suspicious domain, which is likely intended to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to game guides.

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://traffnew.ru/123?utm_term=eve+online+caldari+ship+fitting+guide
    • https://cdn-cms.f-static.net/uploads/4368982/normal_5f89420b6165e.pdf
    • https://cdn-cms.f-static.net/uploads/4365582/normal_5f8747cc22f2a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/feb482fb-9ca6-47c4-964f-e6980be6e2ac/javoxa.pdf
    • https://s3.amazonaws.com/palevijuj/citizen_by_claudia_rankine.pdf
    • https://uploads.strikinglycdn.com/files/1505b81d-3e3f-4f20-ae7b-155dbd65c903/56494375216.pdf
    • https://uploads.strikinglycdn.com/files/368f96b1-ad35-4f21-bf48-f90dbb85251d/10140514847.pdf
    • https://uploads.strikinglycdn.com/files/9c1e9c50-abf4-4b42-9bce-5ccdb416b115/filepexotikirarutotovuwow.pdf
    • https://s3.amazonaws.com/godoremitiwuja/stickman_torcher_chamber_games.pdf
    • https://s3.amazonaws.com/pewebopufupe/nba_streams_reddit.pdf
    • https://uploads.strikinglycdn.com/files/ef6cc302-66f8-4358-8935-b5c074cc964e/95698535244.pdf
    • https://s3.amazonaws.com/lorifawuvawot/wiraxalulojimula.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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d245.bin
3e55258cd03a42e3a19bd028e02c6d65eafa86ac8cf554eb8508d2a70d45b540		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD245 5432 bytes
font_01_sfnt_off0000e4c6.bin
7dc806d15aee0ee91ef56c6d090044a91370c65074accfd03d18695f1518df82		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C6 10536 bytes

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