Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb97afb99b972f48…

MALICIOUS

PDF

64.6 KB Created: 2021-02-20 01:54:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66bb09114a4bcd711007b8e459fafb84 SHA-1: 111158e54f7e13853e78f27a69fb161b339c54f9 SHA-256: bb97afb99b972f48bb92e7bec0548e904f77fc36e761a17b9066a91ef1721cc3
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 URL pointing to 'seumenha.ru' which is likely part of a phishing campaign. The document body, though partially corrupted, suggests a lure related to a 'Coleman grill stove'. No scripts were extracted, but the presence of external URIs and the overall detection profile indicate a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/wix?keyword=coleman+grill+stove+with+perfectflow+%2526+instastart
    • http://br1.red/musawavapazinipejifisezoy5108.pdf
    • https://cdn.sqhk.co/zarejesorufo/ibMhhs5/anime_couples_dress_up_games.pdf
    • https://cdn.sqhk.co/zimopaji/bLU4jhz/short_life_quotes_funny.pdf
    • https://cdn.sqhk.co/busosuwik/oihgjjc/weed_leaf_outline_tattoo.pdf
    • https://cdn.sqhk.co/gotakavapu/ejgjhgY/34533669326.pdf
    • http://girlita.space/kekosaginovavupegid9k3if.pdf
    • http://tehnotop.space/wukajivatogonuvaxodotiwexxrqh.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/betefowubevat/konulalud.pdf
    • https://s3.amazonaws.com/figidireki/xegogezesafutazu.pdf
    • https://s3.amazonaws.com/venunamazozuzo/75199542539.pdf
    • https://s3.amazonaws.com/kukazowox/free_anniversary_card_template_word.pdf
    • https://s3.amazonaws.com/jivuxo/55424917593.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_off0000bddc.bin
11091cff9a722dcb82a1cfa030f9c63e00f7a33ebc3aa80b84bf1a30bcf7fdda		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBDDC 5484 bytes
font_01_sfnt_off0000d06d.bin
e20a750a34a60dece1c73524991935a78dc41dc0e646669718eb36375547c484		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD06D 10532 bytes

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