Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8415759a83a5dac…

MALICIOUS

PDF

122.6 KB Created: 2021-03-13 17:32:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: e23b0777443b68d45116ba640d96d5b8 SHA-1: 4e0ba424d09cec42547b8fc9d13f3fa56022291a SHA-256: e8415759a83a5dac0ebf020d341381eba76983aa3b3dfccc648ccb50a95cd20d
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by ML classifiers and ClamAV. It contains numerous external URIs, many pointing to disposable hosting, suggesting a link farm designed to redirect users. The presence of embedded URLs and the overall structure indicate a phishing or malware distribution attempt, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9122

Heuristics 4

  • 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 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://golowaki.ru/aws?utm_term=ufc+strawweight+fighters PDF link annotation
    • http://lozipazom.sportsontheweb.net/ielts_general_training_writing_practice_test_with_answers_2020.pdfIn PDF document text
    • http://niburufajanuto.sportsontheweb.net/what_is_signature_valid_in_aadhar_card.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497372/normal_6002e7f23ccdb.pdfIn PDF document text
    • http://netopodimamo.mywebcommunity.org/80103965644.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454668/normal_5fd62f9a6eda8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420260/normal_6042d0e09c065.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481156/normal_5ffac45ba4ba9.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/iceland_guesthouse_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf7c37fb-5fb9-4f95-a44e-aeb41bfb2ae1/what_is_the_best_home_elliptical_trainer.pdfIn PDF document text
    • https://ff0b3df2-dc61-4aeb-9024-93fa9b5bc175.filesusr.com/ugd/aa14a9_68cfadc864154a209e0d096277f5d5e7.pdf?index=trueIn PDF document text
    • https://1058d175-53f8-4d86-9201-ae9c1fc74009.filesusr.com/ugd/62a633_bb28763e9b314b55ac737ed658ef9443.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/15131062264.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2586aac2-45fe-4c6c-86c8-7f6b5e899506/muwetitalizasoneka.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46ecaa46-d97c-468f-ba55-1970c38bc061/belkin_n150_wireless_router_review.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/clear_cache_android_samsung_galaxy_note_8.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/goxuxoge.pdfIn PDF document text
    • https://51f47fa2-20f7-4ec4-bb91-8ae4aee689b4.filesusr.com/ugd/917232_10227f685c434ef3a8e89ac3d516e6d6.pdf?index=trueIn PDF document text
    • https://03dfb0eb-7fe6-4188-ad87-ea2b88df7b19.filesusr.com/ugd/f967ac_a0e26029c4b145cabe66616686657c73.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2dda2d0-7572-4e08-91ad-9501e2b2337e/mokutuwenobale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94876126-7095-4e74-abdb-ed9632bacd81/to_kill_a_mockingbird_chapter_9-11_worksheet_answers.pdfIn PDF document text
    • https://7b4e975e-109f-4397-a679-93e438ff1453.filesusr.com/ugd/c33f71_43576166603d45d393f173ea7b3d82f5.pdf?index=trueIn PDF document text

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