Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7b1131fbaceab0d…

MALICIOUS

PDF

54.5 KB Created: 2021-03-06 10:21:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 53e7ece62d1a40ef0f9330779be318a3 SHA-1: 509ce77ec53ac170ac2d0177c3535bed37c2c172 SHA-256: b7b1131fbaceab0d43a9bd16e478247f56b9d993a8f112780b2392c2e48711f1
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of external links, many of which are hosted on disposable domains, indicating a link farm designed to direct users to malicious content. The ClamAV detection and ML classifier further support its malicious nature. The embedded URLs suggest an attempt to redirect users to phishing or malware download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5764

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://jottigo.ru/award?keyword=amazon+echo+dot+3rd+generation+essential+user+guide+2019+edition PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4461202/normal_5fd11257a8e71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470232/normal_601e4d83cbcf9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450883/normal_6036b5f0cb68e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408475/normal_602c0a0089e29.pdfIn PDF document text
    • http://dalkomis.website/sharp_microwave_oven_drawer_smd2470asosfci.pdfIn PDF document text
    • http://vugiris.22web.org/kimolonifes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446931/normal_601319517dc3f.pdfIn PDF document text
    • http://ontrade.top/balancing_chemical_equations_worksheet_answers_instructional_fair_incjyyzi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420602/normal_602f9d479f839.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465908/normal_60074f4cdf756.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07607663-cc6e-407b-a7b9-1ec69581c3fe/what_kind_of_oil_filter_does_a_2008_ford_escape_take.pdfIn PDF document text
    • http://remibuvemofe.epizy.com/93138019127.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5ccd763-e1b6-476e-8e06-882ba44c17b9/5th_book_in_the_maze_runner_series.pdfIn PDF document text
    • http://lekipuvuji.epizy.com/viking_raid_on_lindisfarne_newspaper_report.pdfIn PDF document text
    • https://f770b3d7-c897-40e0-9323-5ad0abd91552.filesusr.com/ugd/1fa6dd_9086527e63da4b0087e318ec0934f87d.pdf?index=trueIn PDF document text
    • https://21e323bd-7fdd-46e9-a6c7-4880e76d7610.filesusr.com/ugd/0a51c1_e22381724706412f9b65eb7d5bbe40e6.pdf?index=trueIn PDF document text
    • https://8fc1c2d6-49ba-4d63-8b95-0327ef2b1627.filesusr.com/ugd/1849a1_2e44c3610d6a4172b5f0bfab019e4d01.pdf?index=trueIn PDF document text
    • https://2d130471-2a64-48ba-87cf-8f1e86c6acad.filesusr.com/ugd/9c43ec_6844f29550544692a588820695123194.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/72b9d9ce-43b7-4b8d-87cf-1e1059ed9c38/momupobagatigatiruwosuse.pdfIn PDF document text
    • http://rajimorix.rf.gd/troy_bilt_3550_generator_price.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f6a400b-0273-4715-b701-21287ef2ffc5/car_air_conditioner_quick_fix.pdfIn PDF document text
    • https://b9a4c3d6-4ccf-4d04-9b0f-c2e9c357e15d.filesusr.com/ugd/e5cbe5_cc9151c1d3c347bcabdf1cfb73ecb7ed.pdf?index=trueIn PDF document text

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