Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc96e3244ea67a2e…

MALICIOUS

PDF

156.7 KB Created: 2021-01-04 16:14:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f4c1d5a56768d0f4b1b53d9a12276097 SHA-1: 6fd9bcc77c0514e505769a0f376d7a7e75a1fe38 SHA-256: fc96e3244ea67a2ef91aa8b9e56c45f827a5e1b3fc52d4b8eae6e3a3f2afbe88
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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/123?utm_term=kingroot+apk+one+click+root'. This URL is likely used to lure users to a phishing site or download further malicious content. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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
  • 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/123?utm_term=kingroot+apk+one+click+root In PDF document text
    • https://cdn.sqhk.co/gisanewat/tjhhjhh/ryan_s_world_bubble_shooter_games.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371508/normal_5f8ffa13d1fac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412379/normal_5fada9b1d6540.pdfIn PDF document text
    • https://cdn.sqhk.co/kofuvufexo/jcjgF3t/adidas_cricket_bowling_spikes_shoes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377403/normal_5f96cc89b5b9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473654/normal_5fe6376aba96c.pdfIn PDF document text
    • https://cdn.sqhk.co/vavusiwi/miBohc8/paper_plane_planet_mod_apk_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/nopawuwam/dNjgDRR/oddmar_ios_controller.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386333/normal_5f97d69baf3c6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408584/normal_5fcb5d43ee5e2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002130c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2130C 4744 bytes
SHA-256: 9b33cdaa089deb34d235b882d3b10be75d0507a3fc76cd8723ae2b1d0d122932
font_01_sfnt_off0002232e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2232E 17216 bytes
SHA-256: d5c03f910e497e70e9b999bc422a45d4598090a11a071fb27cc5ffa9d745e9d6
font_02_sfnt_off000257a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x257A4 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

Open this report in the interactive analyzer, or submit your own file for analysis.