Malicious PDF — malware analysis report

Static analysis result for SHA-256 61e372923290c46b…

MALICIOUS

PDF

67.2 KB Created: 2021-01-05 06:49:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: ecdb816a7ad86028a1fa105f6df5cedd SHA-1: 410f857851f4bda1ef057f6f63c66b366595643a SHA-256: 61e372923290c46b2d20ecabcc0207e78b9d0240c9e767d502d3f455956eabd6
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ggtraff.ru/mozel?keyword=words+crush+hidden+themes+answers In PDF document text
    • https://static.s123-cdn-static.com/uploads/4478716/normal_5fedc80dcdca9.pdfIn PDF document text
    • https://cdn.sqhk.co/bepotedaxus/CGgk5jb/jenilobumunuboxi.pdfIn PDF document text
    • https://cdn.sqhk.co/bavomizobe/jicYLhe/nfl_2019_football_league_manager_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468261/normal_5fd2ceb89e351.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443326/normal_5f9eec25a5221.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402252/normal_5fd95fea6f9a1.pdfIn PDF document text
    • https://cdn.sqhk.co/zisubiziwu/eWR1qid/snapseed_editing_background_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451231/normal_5fd298d017d85.pdfIn PDF document text
    • https://cdn.sqhk.co/bujavenizake/ojagcSA/vetiraxaminap.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502178/normal_5fd09bcb76895.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490725/normal_5fd8508242673.pdfIn PDF document text
    • https://cdn.sqhk.co/girewobo/IiidIo7/17572594532.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382405/normal_5f8d6aef37323.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454678/normal_5fe6afbdd74db.pdfIn PDF document text
    • https://cdn.sqhk.co/vemikozoj/TElXOzt/sapupisiruxesesojumases.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_off0000cc0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC0F 5252 bytes
SHA-256: a864c9192ad3675dc56f25d23cb40576f53d6324db2e767b1f4444b3fa901d2c
font_01_sfnt_off0000ddd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDD6 9936 bytes
SHA-256: a79e451a784ae286bff70b1985c5cdaed94e6ebd68237d782403e0d4b33bc75d