Malicious PDF — malware analysis report

Static analysis result for SHA-256 4574cef17c361efa…

MALICIOUS

PDF

54.6 KB Created: 2020-11-10 07:40:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: e620e2e5b716876b03cc7dcdc769af2f SHA-1: dc31e00bc2957f08482cdb7ce32e3bb5b0309e90 SHA-256: 4574cef17c361efab1b4bd5db262c79fb65ced9c6f571d6c3e2885252a40fdb2
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, with a critical heuristic identifying it as a link farm. One of the primary external URIs, 'https://trafffe.ru/aws?keyword=epidemic+sound+sweden', suggests a potential SEO spam or phishing lure. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious classification. No scripts were extracted, but the structure and linked content indicate a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9406

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/aws?keyword=epidemic+sound+sweden PDF link annotation
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/xinimafumuvuk.pdfIn PDF document text
    • https://jidugurulepapol.weebly.com/uploads/1/3/4/3/134310086/dfb98.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fff526b9-bda0-4669-8c1d-d238e08c58eb/35859215601.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fc63260-7f49-47e2-8a2a-6bcedbd32ec8/vomazuzorojalolu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4b412af-22ef-4394-9de6-38b9b34ff4c0/maus_volume_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ba1fc5e-279f-44c9-9f27-e7eda385f9c8/zombie_assault_2_hacked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f1110c4-f9b1-4a95-afc4-b95a7ea4018d/sugamanilixini.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f796b28d-15ef-452e-a313-f6d01e6f3d00/4184563322.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1dbb6dcf-7528-45e2-835f-42985e191e65/56288254579.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1776040-9b53-468b-8fb8-bb9f05600dd5/41005013615.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd069755-c296-4703-986b-5eee86738e94/xanonimapumesuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbcb8e66-4c2c-406d-8129-76abab672b78/73560472589.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bae0c88d-4039-43c2-b4ec-5917d3cbb7ed/7028076355.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25dba481-d0c4-4155-ae4f-c92038900084/pepunidetuvoxuveginut.pdfIn PDF document text

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