Malicious PDF — malware analysis report

Static analysis result for SHA-256 832a9f75d88c7fda…

MALICIOUS

PDF

74.5 KB Created: 2021-01-25 07:56:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 735966b1f20377d7d16832d3d21f32a2 SHA-1: 2ac820f8c05648aaaaee94d991e80461e99b268e SHA-256: 832a9f75d88c7fdaaf0307238db686215e2956c4f1128a0bbbbf2062e26c67e6
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure. The ML classifier also assigned a high probability of maliciousness. The embedded URL, https://traffmen.ru/123?utm_term=logitech+k811+function+keys, likely serves as a lure to a phishing or malware distribution site. No scripts were extracted, but the presence of malicious links strongly suggests a phishing or credential harvesting attempt.

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/123?utm_term=logitech+k811+function+keys In PDF document text
    • https://cdn.sqhk.co/zekuxemelop/hjjf2if/cookie_cats_pop_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvurero/WXhfxhj/diverse_lynx_jobs.pdfIn PDF document text
    • https://cdn.sqhk.co/dijogiper/LpjcKhi/13672356858.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494149/normal_5ffe0b943b7c5.pdfIn PDF document text
    • https://cdn.sqhk.co/wusakituzu/hbiibgc/fishdom_cheats_diamonds.pdfIn PDF document text
    • https://cdn.sqhk.co/notenirikev/dZQiihc/love_you_husband_quotes_images.pdfIn PDF document text
    • https://cdn.sqhk.co/bomemenun/S0jhkgg/44386401133.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366339/normal_600d79ad9ef9b.pdfIn PDF document text
    • https://cdn.sqhk.co/vemonososepa/jeWmgdM/pop_music_artists_2020.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367296/normal_6003a664665ab.pdfIn PDF document text
    • https://cdn.sqhk.co/koxopumo/jficuia/war_conqueror_4_hack.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470825/normal_600ceee1bfeab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vuropomap.epizy.com/aio_er_online.pdfIn PDF document text
    • http://zazisuj.epizy.com/40940135914.pdfIn PDF document text
    • http://kefuvazaleneze.rf.gd/commodore_amiga_emulator.pdfIn PDF document text
    • http://nogomazarem.epizy.com/safety_data_sheet_for_fairy_dishwasher_tablets.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A6 5156 bytes
SHA-256: 8301193cdeebe8c08726d85bc22ec193bf8815f21bb6257f598f1d9b9ee6131d
font_01_sfnt_off0000f35a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF35A 12160 bytes
SHA-256: 861d054b3d383dd4800a8b7c3e345a3b85c4099a23167cf3c75dc36a9fff76b1

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