Malicious PDF — malware analysis report

Static analysis result for SHA-256 7990aa3853977736…

MALICIOUS

PDF

58.4 KB Created: 2021-02-13 13:05:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 36ed9d2c19cb88977f972c86f4ebf9e4 SHA-1: 38617eee4c3c1ba0d42807a90434c298782ae5b2 SHA-256: 7990aa38539777363563b6a51598c90ec43b3ccf65a4c122409934d761ce4824
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of external links, many hosted on disposable domains, characteristic of an SEO spam or phishing campaign. The ClamAV detection and ML classifier further indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external links suggest it's designed to redirect users to malicious sites, potentially for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7196

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
  • 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://leonvi.ru/aws?utm_term=docker+community+edition++linux PDF link annotation
    • http://clebohets.xyz/windows_api_referenceg8os9.pdfIn PDF document text
    • http://baykamif.space/warner_brothers_studio_tour_guide_jobsm6p82.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405195/normal_5ffb9ff13ef65.pdfIn PDF document text
    • http://copyright-security-ig.com/s_s_pandey_sociology_book_free_downloadeysjb.pdfIn PDF document text
    • https://timifuxi.weebly.com/uploads/1/3/4/6/134676324/sodono-wosazumam.pdfIn PDF document text
    • https://kiwosadil.weebly.com/uploads/1/3/5/3/135384828/7946212.pdfIn PDF document text
    • https://manoxumumaxu.weebly.com/uploads/1/3/4/4/134472756/larobutuv.pdfIn PDF document text
    • https://liwavijej.weebly.com/uploads/1/3/4/3/134379327/09e339d14.pdfIn PDF document text
    • https://vazexisosumufil.weebly.com/uploads/1/3/4/4/134465451/a4f51ade6a3fab.pdfIn PDF document text
    • https://fadufavibog.weebly.com/uploads/1/3/4/8/134889314/foxedepaxipaw.pdfIn PDF document text
    • https://cdn.sqhk.co/zejizoguzut/hwggF0Z/tanglewood_golf_course_ky.pdfIn PDF document text
    • https://zujomesesewega.weebly.com/uploads/1/3/4/9/134902804/c3b2ad4460.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407066/normal_5ffdc0ad425e0.pdfIn PDF document text
    • https://buserakufazuwus.weebly.com/uploads/1/3/4/0/134097478/35164.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387939/normal_600d240e4e3ab.pdfIn PDF document text
    • http://greatholl.com/likivizedagbr3b3.pdfIn PDF document text
    • https://kipunelikerave.weebly.com/uploads/1/3/0/9/130969086/nipuduvokonak.pdfIn PDF document text