Malicious PDF — malware analysis report

Static analysis result for SHA-256 d033e061773e36e9…

MALICIOUS

PDF

64.1 KB Created: 2021-04-05 03:44:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 03ae809004b65544d2885476e59ea77c SHA-1: 8df0effb6590165ba5a9b7bfd11c458c5efd3d1e SHA-256: d033e061773e36e92cf04dda4e4611f527d60cc6c73f96e63b23cbc87cca248b
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 0.9523

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://fokemale.ru/strik?utm_term=how+to+use+garmin+s60+for+running PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4425921/normal_601a80d3696e7.pdfIn PDF document text
    • https://bivufinemena.weebly.com/uploads/1/3/1/3/131380184/judijebuvawux_wudowidasit_xomorosa_gamuzijisexudum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382771/normal_605132b605171.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383295/normal_5feeb772abe93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365547/normal_6063180c076e6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465690/normal_5fe417026e654.pdfIn PDF document text
    • https://kizifafub.weebly.com/uploads/1/3/4/7/134714450/pikafona-guxamuju.pdfIn PDF document text
    • https://wojopegoguw.weebly.com/uploads/1/3/4/6/134690206/bevig.pdfIn PDF document text
    • https://donelodef.weebly.com/uploads/1/3/5/4/135401433/gazoke_roxanojovop.pdfIn PDF document text
    • https://tozilamuvopodes.weebly.com/uploads/1/3/5/9/135966944/31b60ae.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1169d74-6a47-417d-a633-d989728e10c5/mary_shelley_frankenstein_movie_elle_fanning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5d4e224-c94e-46a4-8f66-2effeb717c0f/sikusepa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8a9450d-8958-4d3c-94aa-3183d82d1de8/is_it_normal_to_not_see_a_heartbeat_at_6_weeks.pdfIn PDF document text
    • https://488c2ff9-9ff4-499e-8f11-525115e20b22.filesusr.com/ugd/8aba0c_63391f603d1a4810af519badf0e2d6ba.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c536fee-b174-436a-9e56-2f9346c08580/bejobetejaluwosowonu.pdfIn PDF document text
    • https://b01cffea-7a05-49e8-9781-04202a21c04b.filesusr.com/ugd/d5d855_f22f5cbbd96641dc9e5faf4291600235.pdf?index=trueIn PDF document text
    • https://6998e30b-c911-4113-ab34-4c15204891c7.filesusr.com/ugd/429b25_8e8d46b6a12d475b9b92242f0dade47a.pdf?index=trueIn PDF document text
    • https://46c19374-600d-43be-a5f2-d8bf07c6fddf.filesusr.com/ugd/cc94a4_4998b08793cf46bfbe30a8dd86270e69.pdf?index=trueIn PDF document text
    • https://cd70d4e5-4a1a-4071-96d1-f2415ea5ece1.filesusr.com/ugd/7f46b5_129aefd7c87b49f2b6dae575bb20ac6a.pdf?index=trueIn PDF document text
    • https://617461ef-fe81-4523-a767-db29e8f0b718.filesusr.com/ugd/a298ce_e99ad1df139c49c5962f5a5c7635adac.pdf?index=trueIn PDF document text
    • https://459ec6dd-5b69-4322-a182-74abbfaa0e48.filesusr.com/ugd/221eaa_4864167328774e83ac8c7cad26fe3bdf.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/35c52e4d-3829-4444-a5e8-1eae5b1fa25b/17076547000.pdfIn PDF document text

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