Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b40117dae1805a0…

MALICIOUS

PDF

51.7 KB Created: 2021-03-09 12:23:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 28412eac1ffd75ad0bcd38f34d523d60 SHA-1: 931a7715b2f52feec00e9575e63934c8fa4c8344 SHA-256: 3b40117dae1805a00c17cb13d54b598673492a62dcb49cf1cec01e440f6b70ba
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, identified as a link farm, suggesting a malicious intent to manipulate search engine results or redirect users to potentially harmful content. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted, but the presence of numerous URLs points towards a phishing or content manipulation scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7129

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://leonvi.ru/award?keyword=business+plan+for+bakery+cafe+pdf
    • http://figupatofewox.iblogger.org/xanodaberariduge.pdf
    • http://lotupojaxuvutix.mygamesonline.org/37785336435.pdf
    • https://cdn.sqhk.co/movumatoz/eijkXia/potabafoketuwin.pdf
    • http://makelemeg.mygamesonline.org/filejamadorejudawi.pdf
    • https://cdn.sqhk.co/dawadetugas/hieicjf/dakumaxezeli.pdf
    • http://forajadafogaxuv.medianewsonline.com/what_is_the_smallest_city_in_the_world.pdf
    • https://uploads.strikinglycdn.com/files/f4947e03-e4e4-441b-922a-7f544ba84038/toyota_corolla_gli_2016_for_sale_in_lahore.pdf
    • https://91953a53-6f32-4f2a-9b2e-0f954541ff31.filesusr.com/ugd/dad90e_1376ec63b8434d58ade7f63e8aa286c4.pdf?index=true
    • https://uploads.strikinglycdn.com/files/21392c83-ccaa-4873-8dd1-9d99dff5913e/rodepirenizedejiro.pdf
    • http://marenoko.epizy.com/business_studies_a_level_model_answers.pdf
    • https://uploads.strikinglycdn.com/files/483106a1-eed4-4cfc-9cbb-1f3c0cf72407/aja_ki_pro_go_price.pdf
    • https://59e5a08b-0d8d-455f-a3a7-35a3b781ab3e.filesusr.com/ugd/784815_8e7e0417aec34126b8f8d906b0e884a3.pdf?index=true
    • https://uploads.strikinglycdn.com/files/7caf15bb-35f2-4f58-b47d-4b6906862ad7/joluw.pdf
    • https://s3.amazonaws.com/povodijirig/text_animation_premiere_pro_templates_free.pdf
    • https://s3.amazonaws.com/fofeguj/gewekof.pdf
    • https://1094d5c0-a920-47c7-a1de-7e2d56a92d84.filesusr.com/ugd/47b1e8_3d47901dcae9425daffc8f5c464534ae.pdf?index=true
    • https://37523d11-79cf-4eb3-ada4-f05de57c71ee.filesusr.com/ugd/275374_fad8666b026249e29c6d569198e93979.pdf?index=true

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