Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aa44b57086a185a…

MALICIOUS

PDF

63.5 KB Created: 2021-04-10 21:16:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 43f28d73dac8924412f46e0a34c4654e SHA-1: f4e246d1458ce51e0dbd71100ad8ad50a2d2a870 SHA-256: 9aa44b57086a185adcb7c283e4d78192e4d0ee0f8faf5465cd53578ef4d44b3c
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6941

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://xajibur.ru/strik?utm_term=skyrim+se+graphics+mod+list PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416304/normal_6035b0d0e38cf.pdfIn PDF document text
    • https://cdn.sqhk.co/vupapevixu/VOWiigf/fashion_beat_game.pdfIn PDF document text
    • https://cdn.sqhk.co/mibupufek/jeiijjJ/karidolosow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383925/normal_603be065ca6f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379959/normal_5fde550d47bb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481157/normal_5fdbdd306a2db.pdfIn PDF document text
    • https://cdn.sqhk.co/rarirawibowo/jjiaoge/dragon_world_movie_telugu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366029/normal_6013689ab0961.pdfIn PDF document text
    • https://abee6ad4-cf47-459a-954e-22b9b9bb30ad.filesusr.com/ugd/4bdc6d_ef775c7d40684098b3ba8683ab668d4a.pdf?index=trueIn PDF document text
    • https://e85625e8-91d5-48c2-95a4-67b7b95d5b39.filesusr.com/ugd/b97a97_ba162e66fc1646b08015669b32a811ef.pdf?index=trueIn PDF document text
    • https://788ae96d-7a4f-4726-91a9-07bb742fb3e7.filesusr.com/ugd/97aff7_0e10bf043ccd422cbd163b52bd777a2c.pdf?index=trueIn PDF document text
    • https://5b949be5-44ef-49af-96c7-0ebaa8fe632e.filesusr.com/ugd/3402b1_9697a5b34e044c34a16ef2564b853d71.pdf?index=trueIn PDF document text
    • https://6754c94d-8795-460a-880d-d127bb37d4d4.filesusr.com/ugd/2383dc_d2cce77c24f544fd9f20160521de9ec3.pdf?index=trueIn PDF document text
    • https://a3de454e-1598-42bb-a259-4eb69c42f179.filesusr.com/ugd/fb5067_68917236e543487bb842db8450b3bb25.pdf?index=trueIn PDF document text
    • https://8dfdba76-182f-4dc4-9dda-37a8c8d09dc9.filesusr.com/ugd/4ae4db_a196c3deb506451abbf31f7c5377ed6c.pdf?index=trueIn PDF document text
    • https://e9593579-f51f-4dc6-af55-2543ab512b45.filesusr.com/ugd/37952c_bf20c5c8083d4eaa8d56da4fea7839b7.pdf?index=trueIn PDF document text
    • https://67258aaf-84c5-4a88-bfd2-1aa7ddb6c27a.filesusr.com/ugd/850f07_49bcd201dbbf44e4ab1158078b44fc7c.pdf?index=trueIn PDF document text
    • https://98be45bc-63b9-4117-aff7-84a3d4f2c4a0.filesusr.com/ugd/90c678_e225bd1f74f14d848c0b685ec5fdee6f.pdf?index=trueIn PDF document text
    • https://5be7aec3-7d66-433b-ae1d-2bfb807ddf2a.filesusr.com/ugd/24deb6_e5e49e0f654d4346afa4d8079572b7f7.pdf?index=trueIn PDF document text
    • https://0a01f052-6ee6-4bfa-868d-d2e49373b03f.filesusr.com/ugd/55f640_ae9a9802065b424ebf7129ece67767af.pdf?index=trueIn PDF document text
    • https://bed1e925-73f7-457c-87ff-53f226988024.filesusr.com/ugd/d4a8ce_a4ff23a13a1d4cb9a33695a5b58f47b0.pdf?index=trueIn PDF document text

Open this report in the interactive analyzer, or submit your own file for analysis.