Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a5a3b1aed634f82…

MALICIOUS

PDF

73.5 KB Created: 2021-06-11 07:48:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7a57e14bb29f2c49e5965dc3d34e0551 SHA-1: 0e8ddc341a1898f7aec985b6fd250f56519a4ca3 SHA-256: 1a5a3b1aed634f822ec955151decc5830c40baa48ac42084975ddd4294850702
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 0.5926

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://ketchas.ru/pbw?utm_term=biodata+for+marriage+for+boy+online PDF link annotation
    • https://tazusarativiwu.weebly.com/uploads/1/3/4/5/134510609/xolotafex_kuniw_wesoras_jebokufove.pdfIn PDF document text
    • https://gufogejerujog.weebly.com/uploads/1/3/1/4/131406717/bifitug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392195/normal_605d886f61ca4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481402/normal_5fe1b02338a7b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417813/normal_5fc915c566f0a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373297/normal_6049b17624cff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500679/normal_6044eb882bbc3.pdfIn PDF document text
    • https://tisolalaw.weebly.com/uploads/1/3/0/8/130814234/rewedo_kaxafurufusafat_wulaja.pdfIn PDF document text
    • https://mulibini.weebly.com/uploads/1/3/4/8/134881685/zebofesu.pdfIn PDF document text
    • https://bosazafaxaku.weebly.com/uploads/1/3/1/3/131383721/2736321b2f1b29d.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45fbf060-9efb-43f3-a0dc-ce496d290780/58681494628.pdfIn PDF document text
    • http://dokadeku.pbworks.com/w/file/fetch/145112190/filmyzilla_new_punjabi_movies.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/113df741-a764-4ec3-a2c4-d6f0d3d873c0/dajeterejigeduvodux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a74284c-9336-4303-b80f-b1a57944521a/tomaganina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/919e08e3-dfcd-4851-a51b-eb6b4cb8fdc2/20309808138.pdfIn PDF document text
    • http://zobifel.pbworks.com/f/12359498042.pdfIn PDF document text
    • http://betifufato.pbworks.com/w/file/fetch/144654990/nba_2k15_my_career_cheats_ps4.pdfIn PDF document text
    • http://guzopisuw.pbworks.com/w/file/fetch/144712692/como_convertir_los_ml_a_gramos.pdfIn PDF document text
    • http://risuxujuvu.pbworks.com/w/file/fetch/144517680/sanimakonageg.pdfIn PDF document text
    • http://taxexuwej.pbworks.com/f/tony_buzan_hzl_okuma_yorumlar.pdfIn PDF document text
    • http://nagomax.pbworks.com/f/zizobetifolepogod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfe531bb-4c50-4d41-bba4-9708a22e1c91/which_of_the_following_operators_can_be_applied_to_pointer_variables.pdfIn PDF document text
    • http://siseraxoru.pbworks.com/f/oaktopus_secret_like_my_singing_monsters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0909e5d1-95ea-4f34-90f0-82e6990b2394/15042279242.pdfIn PDF document text

Related samples 8

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