Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f0f060c999c060e…

MALICIOUS

PDF

81.5 KB Created: 2021-03-02 21:49:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: be02de78be887d8b26b5f2c70b4265b2 SHA-1: 75102a097b75ef341f580e662da54ea90376a8ba SHA-256: 9f0f060c999c060e287d8ef7a172450896366017b0e0a22edca5c21db5ff787e
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, likely intended to lure the user into downloading further malicious content or phishing for information. The document body, though heavily obfuscated, contains references to 'Excell pressure washer' and the authoring application 'wkhtmltopdf', suggesting a deceptive lure.

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://dafemum.ru/123?utm_term=excell+pressure+washer
    • http://blancop.xyz/behold_the_dreamers_ebook_freesh7qy.pdf
    • https://cdn-cms.f-static.net/uploads/4373755/normal_5fdb6eb1868d7.pdf
    • https://cdn.sqhk.co/tezofugowura/bGjgOgc/72946047594.pdf
    • http://want-seo.ru/jezotokuwedesuf0l6v0.pdf
    • https://static.s123-cdn-static.com/uploads/4378393/normal_5fe0fb3fc4ef3.pdf
    • https://cdn.sqhk.co/saseponirifa/08ghpw2/pc_games_mmore_wow.pdf
    • https://static.s123-cdn-static.com/uploads/4383340/normal_5ff6ad09bc909.pdf
    • http://neliwiveles.22web.org/microsoft_word_calendar_templates_2020.pdf
    • https://cdn.sqhk.co/livukigelo/Via0gjG/can_photomath_plus_do_word_problems.pdf
    • https://static.s123-cdn-static.com/uploads/4472494/normal_6008cf7053fa2.pdf
    • https://cdn-cms.f-static.net/uploads/4458854/normal_602f5f8522fdd.pdf
    • https://cdn-cms.f-static.net/uploads/4369506/normal_5fd9149619d00.pdf
    • https://static.s123-cdn-static.com/uploads/4420430/normal_5ff4fc88a2224.pdf
    • http://investorlands.ru/866708468lpq9p.pdf
    • https://static.s123-cdn-static.com/uploads/4452206/normal_5ff8eab3253a1.pdf
    • https://cdn.sqhk.co/parikozug/2hdg75j/despacito_piano_tiles_play_online.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gazivemon/jonabuketisuj.pdf
    • https://s3.amazonaws.com/wizomoravazub/answer_unlawful_detainer_philippines.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_off00010218.bin
e17dbd0b7cbefb7e3dc80cd2fc5e3264a36d630d4d7b964da0dcf17ea84c9c94
pdf-font-stream PDF embedded font (sfnt) at offset 0x10218 5136 bytes
font_01_sfnt_off000113a6.bin
7b1b40a18a936d9274f8a0ff3b41fb65e0da4ac1cb2848321193b496dc7cae98
pdf-font-stream PDF embedded font (sfnt) at offset 0x113A6 11072 bytes