Malicious PDF — malware analysis report

Static analysis result for SHA-256 c084c43ab1b14575…

MALICIOUS

PDF

62.3 KB Created: 2020-11-10 11:52:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 118bdbc7ea61dc05dd3e691b2de13e2a SHA-1: 1247f85c3a2e5b5991f1bb109d75d511b38e79b0 SHA-256: c084c43ab1b14575363c61922e430e5ec5fb0534cb5518d8f5fedfe74da7ecf7
254 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file is identified as malicious by multiple heuristics, including ClamAV and an ML classifier. It contains links to known malicious redirector infrastructure and a large number of external PDF links, suggesting a link farm or phishing attempt. The document's content, though heavily obfuscated, appears to be a lure for remote support tools, which is a high-risk tactic in unsolicited documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://gettraff.ru/123?keyword=supersonic+sc-813+tablet+manual
    • https://gesurori.weebly.com/uploads/1/3/4/3/134353915/756164.pdf
    • https://cdn-cms.f-static.net/uploads/4410433/normal_5fa85046894bc.pdf
    • https://vowodilob.weebly.com/uploads/1/3/4/6/134697463/fovawikug-tebusilot-muzenesad-kotifajibukinup.pdf
    • https://cdn-cms.f-static.net/uploads/4369908/normal_5fa40c7b87c34.pdf
    • https://cdn-cms.f-static.net/uploads/4407756/normal_5f99e8a71ad51.pdf
    • https://cdn-cms.f-static.net/uploads/4408586/normal_5f94738c78a3a.pdf
    • https://cdn-cms.f-static.net/uploads/4403824/normal_5f9718d8605cd.pdf
    • https://cdn-cms.f-static.net/uploads/4405194/normal_5f97b517aee2f.pdf
    • https://cdn-cms.f-static.net/uploads/4393916/normal_5f9efcc8b6c02.pdf
    • https://cdn-cms.f-static.net/uploads/4367912/normal_5f8ab4fd6844b.pdf
    • https://latijazaw.weebly.com/uploads/1/3/4/3/134312978/7673166.pdf
    • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/porukofosu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/fe2e66d2-0712-4d67-9a6d-81f08fb7bc89/bin_s_xe_51g__qun_my.pdf
    • https://uploads.strikinglycdn.com/files/8aadc853-4c45-4109-a35d-b35848325ac1/altec_lansing_221.pdf
    • https://uploads.strikinglycdn.com/files/04e56e07-935e-400b-be0a-b87e9e5f7a08/86834792821.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b55b.bin
7d73e32ffe88156fe278d5f6b1c0d20b3dc1b1b3a17827e43c5c31097e016bcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB55B 5764 bytes
font_01_sfnt_off0000c8ec.bin
4fe91358055ea152057b1e5cf0454bc45ed3aa6c030f86daf0f16746f6562ec5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC8EC 10340 bytes

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