Malicious PDF — malware analysis report

Static analysis result for SHA-256 f469821394e0e386…

MALICIOUS

PDF

70.3 KB Created: 2020-12-18 09:58:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: a299c007f80023e6a0386562c5516917 SHA-1: 95c85cc66131db9df9b18f291fd5d56d73b7f97f SHA-256: f469821394e0e386176f387165f5b3046b3dc92cdc39b63e208252a8e1254cc6
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • 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.
  • 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://cctraff.ru/strik?utm_term=duoglider+stroller+instructions In PDF document text
    • https://davokirik.weebly.com/uploads/1/3/0/7/130739121/dijuzukotutobeduneni.pdfIn PDF document text
    • https://motazejiwe.weebly.com/uploads/1/3/4/2/134266269/5794146.pdfIn PDF document text
    • https://zozufawagizawag.weebly.com/uploads/1/3/4/4/134454621/8e583eab6af.pdfIn PDF document text
    • https://rowurasivove.weebly.com/uploads/1/3/4/3/134357219/nolipajidekoxexit.pdfIn PDF document text
    • https://dokodajibebabek.weebly.com/uploads/1/3/2/3/132302773/dokunuwifetodo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367911/normal_5f8dea9d3d659.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/76e43288-6c4b-4f7e-a5d2-34860e6d0957/pathfinder_flanking_rules.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/646907c4-6465-436e-9614-61978128bca5/wekirugopadalipar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d154ade-f89c-42ef-9b33-fb001b9ca1a3/mebezi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93126ddd-baf4-4c98-a68e-07eb97cf9ef3/ridgid_framing_nailer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9fdaa96-27a0-46be-a984-0fd7f6826ee8/natodege.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_off0000d7b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B1 4896 bytes
SHA-256: 3eaa1c47d5ab5683f7269d4daf465ef9946956504fe60406ea3bb3c113973bfa
font_01_sfnt_off0000e874.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE874 10588 bytes
SHA-256: 46ef4822ed5d2f0c5d1e1b44eb11fa3dc51cdf6ab9b32defebec65da50cd0d5d

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