Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d067383ae73c8ec…

MALICIOUS

PDF

54.6 KB Created: 2021-01-04 21:29:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 88118ce1c58f4ac01597c0ed697cc583 SHA-1: 1754df1c2a1d15ea2fc9678658d88b7eb9a7d919 SHA-256: 7d067383ae73c8ec2c8f4f8266609eac837019c0ae5ba5ea2b3a048fe3067793
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many pointing to disposable hosting services, suggesting a link farm or phishing campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6699

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
  • 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.
  • 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?utm_term=starter+checklist+form+printable PDF link annotation
    • https://boxolajabamofi.weebly.com/uploads/1/3/4/3/134356625/8334548.pdfIn PDF document text
    • https://roninuvanajeg.weebly.com/uploads/1/3/1/3/131379749/7745478.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404490/normal_5fa8bafaf33e1.pdfIn PDF document text
    • https://cdn.sqhk.co/xefijumu/Ahe1Sry/soccer_manager_games_pc_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367950/normal_5f8b5bd359ce7.pdfIn PDF document text
    • https://mamumudud.weebly.com/uploads/1/3/0/8/130814078/belozujirab_zasazibafibir_gugagak_lubimav.pdfIn PDF document text
    • https://mukeluxera.weebly.com/uploads/1/3/4/5/134528716/kasefawuwewevukew.pdfIn PDF document text
    • https://cdn.sqhk.co/mujexoxa/jNgdhdC/lowes_refrigerators_lg.pdfIn PDF document text
    • https://simebofes.weebly.com/uploads/1/3/1/4/131438459/zakirakolilor_rujuramikumo_mobufida.pdfIn PDF document text
    • https://cdn.sqhk.co/sugifila/u6icjhN/98079853836.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/69618015698.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/77358711230.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31f21420-ea02-4991-919d-c96451fad1c3/kedelatezas.pdfIn PDF document text

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