Malicious PDF — malware analysis report

Static analysis result for SHA-256 08e3a30e858b20ad…

MALICIOUS

PDF

70.5 KB Created: 2020-12-23 22:12:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: da186a0214ac667dfa3f5edfe655c833 SHA-1: fe48d374b15b54e9a87b750ba038bf1690a428cc SHA-256: 08e3a30e858b20ad741dc360a6c19e197e02c6a856c7534ac27e7144e54d2923
154 Risk Score

Malware Insights

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

The PDF contains embedded links pointing to known malicious redirector infrastructure, specifically 'traffking.ru'. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of malicious URLs suggests the document is designed to lure users to a compromised site, likely for phishing or to download further malware.

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://traffking.ru/123?utm_term=guess+brand+answers+level+1 In PDF document text
    • https://cdn.sqhk.co/purovufizu/RP81coX/lazulegedokefufu.pdfIn PDF document text
    • https://cdn.sqhk.co/bazopaxepifu/RTGdnDz/rowasonupagiwolawiziruj.pdfIn PDF document text
    • https://cdn.sqhk.co/xobitabab/jdsQlif/30492732536.pdfIn PDF document text
    • https://cdn.sqhk.co/gibuzini/jbdAFha/neon_live_wallpaper_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/bifugudawesu/PjihjEm/xobetofezafowadorip.pdfIn PDF document text
    • https://cdn.sqhk.co/majatuto/Mijjzhx/free_phone_lock_screen_applock_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/babakobesuxe/y0ibigg/zajunelebamubug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/64a1abea-04c8-4dc9-a64a-632ae610089a/xusuwuwogadikixubepufufa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bae0f39-0542-4b4b-9a10-8572fdf0115c/loi_du_1er_aout_2003.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cd382ca-b860-4762-8ab9-ab77bca457ab/kikiguvumavawalesib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30793c3f-3e5f-4509-a5b5-d2f7ba8b79fb/9268152253.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/96302859933.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b422bbe1-02fa-4443-aead-133ea9d249c4/rovizafesuzinesininibiz.pdfIn 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_off0000cfde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFDE 5192 bytes
SHA-256: 70cae75786c2781ae53973da86eb7465c4637811a979ab6b1c8a81aa35c15def
font_01_sfnt_off0000e1b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B0 13768 bytes
SHA-256: 4e810b9db2d62766fe32a61fd661e06ccb1d879ae31ee51c1652ff5d20124c65

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