Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a5777de510c4694…

MALICIOUS

PDF

58.6 KB Created: 2020-11-10 08:48:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0311061586786f3e2eaea01801f5d5c8 SHA-1: b150eae0b1bd2e8889d0f796322f7fc1cb8fcb4e SHA-256: 2a5777de510c4694ed23de587be29c485d9a2b77d11f0bdf550d4939f70b6151
242 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, with several heuristics indicating it functions as a link farm. One critical heuristic identified a link to known malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to direct users to potentially malicious or phishing-related content, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9923

Heuristics 5

  • 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.
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/aws?keyword=deer+jokes+buck In PDF document text
    • https://jevupatumatawi.weebly.com/uploads/1/3/4/3/134377955/jinawa_majajor.pdfIn PDF document text
    • https://zevigetadafuwun.weebly.com/uploads/1/3/0/9/130969942/melita.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/3079835.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365646/normal_5f9b51035049f.pdfIn PDF document text
    • https://zomusabizexeko.weebly.com/uploads/1/3/4/3/134317177/9431306.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376126/normal_5fa59fa0ac3ff.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/lopivijebepewewemeruxixut.pdfIn PDF document text
    • https://lajoreruxox.weebly.com/uploads/1/3/4/5/134588124/xabuxivaf-punuberit-rozuveb-fobarelubi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6dbce827-81a3-43db-b157-b52839840903/sabujulusob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f1a9f43-d706-4bc3-8165-bd99fc725339/ride_the_tiger.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89219b2c-3066-4631-b59e-eb489840c10d/59713883880.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65cdca39-accf-42d8-9755-4ffc0addecc8/71898597534.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e725cdf3-2390-4abd-a315-e6a8679a0e85/46973132944.pdfIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE95 3136 bytes
SHA-256: de47db92bf3f5fc51c91a90cec9a4790fad33f2756616adfc92d32a4e0b11531