Malicious PDF — malware analysis report

Static analysis result for SHA-256 74b519ec3480fafe…

MALICIOUS

PDF

63.4 KB Created: 2021-01-17 01:14:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 5f6c165447d051e046b79c2e5a1b77d2 SHA-1: 9afd81a08e8fcc108c996c554fd26987cf65ae4f SHA-256: 74b519ec3480fafeedc8ac1d4c76dc06695adcc824388e322f783b881ad0cb49
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffmen.ru/wb?keyword=truck%20racer%20wii%20review'. The ML classifier also flagged this PDF with a high probability of being malicious. While no scripts were explicitly extracted, the nature of the redirector suggests an attempt to lure the user to a malicious site, likely for phishing or to download a secondary payload.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/wb?keyword=truck%20racer%20wii%20review In PDF document text
    • https://cdn.sqhk.co/volinafi/hhgbdij/darkness_rises_pc_gameplay.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/9eApTvQ/xbox_series_s_controller_skin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366335/normal_5f8d21c26f53b.pdfIn PDF document text
    • https://site-1176273.mozfiles.com/files/1176273/blank_calendar_template_february_and_march_2019.pdfIn PDF document text
    • https://site-1210646.mozfiles.com/files/1210646/17000524515.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370987/normal_5f9ebc5ed3a5c.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/ifhdu8s/market_garden_ww2_movie.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375086/normal_5fe6e14fc00f5.pdfIn PDF document text
    • https://cdn.sqhk.co/zafupusapun/ZfX6icf/tobexoriluri.pdfIn PDF document text
    • https://site-1173632.mozfiles.com/files/1173632/30624966923.pdfIn PDF document text
    • https://site-1174609.mozfiles.com/files/1174609/rofopereno.pdfIn PDF document text
    • https://site-1168172.mozfiles.com/files/1168172/45598687298.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000be84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE84 4748 bytes
SHA-256: ea272a2c67bc99ca77fc38e56b280f7c27712c6da91d563b7c964c803d65b69e
font_01_sfnt_off0000ced7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCED7 10032 bytes
SHA-256: fc19fb15884fef4ba958085b32b2917105174b094bf83daed4e9d36ed18a398a

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