Malicious PDF — malware analysis report

Static analysis result for SHA-256 79db050271dd68e7…

MALICIOUS

PDF

74.0 KB Created: 2020-12-30 04:22:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 42b5530b427b2ed03a0f5a07e1a0f29b SHA-1: f4709a72de79717fc7ad78e53f1f7b979da1ae86 SHA-256: 79db050271dd68e7dbc6662e0585be9dd859ea71fa2cf71c3fed71b4eb50512a
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, specifically 'traffking.ru', which is disguised as a wallpaper download. This indicates a phishing attempt to lure users to a malicious site. The ML classifier and ClamAV detection strongly support the malicious nature of this PDF, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://traffking.ru/123?utm_term=santa+claus+wallpaper+1920x1080 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4410207/normal_5f93a9d0d8b78.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485001/normal_5fdff82139eca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464055/normal_5faefe4002503.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465704/normal_5fcdeafc4edfc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489615/normal_5fe30b1409dd1.pdfIn PDF document text
    • https://cdn.sqhk.co/wuluzajiroz/ggjwFh2/download_game_boxing_star_mod_apk_terbaru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426945/normal_5f9a1e29e9bac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369930/normal_5faea94a01fa4.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvotalek/giVj2ha/21757023237.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403557/normal_5fa39d1cb5c1e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445881/normal_5fcb56b9542e2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446924/normal_5fe41fd458daa.pdfIn PDF document text
    • https://cdn.sqhk.co/kujusiru/ob8rggf/pixel_gun_battle_credits.pdfIn PDF document text
    • https://cdn.sqhk.co/dawajimet/giigjgc/43368644749.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392656/normal_5faa6f2d5eb21.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475383/normal_5fd0841a51627.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE28 5864 bytes
SHA-256: 45e6c8d73c0f3ef2c6432b1a27dacb127dd0eaa39073795ac04beecc739e55be
font_01_sfnt_off0000e242.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE242 10424 bytes
SHA-256: cffa95bd31b11b96680c3539cc158e1729636927bec532fa4941ee4e5638aaba
font_02_sfnt_off000105f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F7 16164 bytes
SHA-256: f469c5aa689aa4c1965481b78cfaebbf1c3ebdad2306c7067134b7b4aaa0addd

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