Malicious PDF — malware analysis report

Static analysis result for SHA-256 0824f7d3ee191d64…

MALICIOUS

PDF

64.6 KB Created: 2021-03-11 12:27:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: b7fc3671934685442a6a15223086137a SHA-1: 371f6c0388746df717afb7da3b0dbf3e9b1719ca SHA-256: 0824f7d3ee191d64333d0c3b077178b9ae32ec400a4d5f60796e77a4182c525d
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link farm designed to redirect users to various external sites, disguised as search results. The primary URL leads to a site that appears to be a lure for further malicious activity, potentially related to phishing or malware distribution. ClamAV detection and ML classification indicate a malicious nature, and the PDF structure suggests it's part of a larger SEO-based attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6428

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://gimoguvi.ru/strik?utm_term=will+stephenie+meyer+write+all+the+twilight+books+from+edward%2527s+perspective PDF link annotation
    • http://rebomiken.iblogger.org/asma_tratamiento.pdfIn PDF document text
    • https://cdn.sqhk.co/betewulo/2OiaUij/76788230164.pdfIn PDF document text
    • https://cdn.sqhk.co/vekuperik/fTVjjnZ/pixel_gun_3d_online_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/mugejufunij/0dhbK5I/bemesolitatudiduto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ab1bf51-bd48-4595-9477-4e7e473b1020/harga_mixer_mackie_32_channel.pdfIn PDF document text
    • https://f538c46d-6aff-4997-95da-320e40b30403.filesusr.com/ugd/262ba4_4f9d2eb2ba2b49f3960b5526d50ead7e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/batiku/werunugojeli.pdfIn PDF document text
    • https://9eaa565e-fb97-40b4-b096-d6760803f699.filesusr.com/ugd/55e2c6_1bcbadb1267a49089683391a99c60f0a.pdf?index=trueIn PDF document text
    • https://44bb6ee8-a0fe-4f72-890f-0f0a2fec05cf.filesusr.com/ugd/b65acf_c397a82d3db6434e93368a0d61dcc12e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2820b04-c0d9-49fe-9bfe-7af217f6d11c/vivufurivinosutat.pdfIn PDF document text
    • http://xarotuwegu.rf.gd/55451629510.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/house_of_leaves_book_movie.pdfIn PDF document text
    • https://29159626-56e2-4eb2-a8c1-eb081f451e44.filesusr.com/ugd/a58502_e6abc0b16dc64493b8ef44f1f465110a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbb5a901-f3e8-4b12-940b-d8cd82445dc8/tederosuga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e2b697e-b948-4b40-ae8f-c9f890a1c94a/filasuwezosatawewudadik.pdfIn PDF document text
    • https://s3.amazonaws.com/wujanozo/zolotudazuses.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/262224d3-328a-4311-a0cb-2e3f605627fc/11943123656.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02582b0e-fd61-49ae-9aa9-36704dd90a35/7340560444.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f83e7a8-0f9f-4161-8ccb-6b26665db030/watch_the_shack_full_movie_youtube.pdfIn PDF document text
    • https://s3.amazonaws.com/furunumaroxun/carousel_android_sample_code.pdfIn PDF document text
    • http://rudixexo.epizy.com/37537887723.pdfIn PDF document text

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