Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d7cf62eddd880ef…

MALICIOUS

PDF

61.3 KB Created: 2021-03-16 04:04:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d162f072c2e8ec62fa710709bb5bd774 SHA-1: b248e5d18a27d306b3d176e3e3e9c9f322b50421 SHA-256: 2d7cf62eddd880ef4aac84111c9ce7687a15b79b8aa7a18da89ad7116bbfb428
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which are generated to appear as SEO-friendly links to PDF downloads. The primary lure is "chemistry notes class 12th pdf download", which is likely a pretext to encourage users to click on the embedded malicious links. The ML classifier and ClamAV detection confirm the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6439

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://jacksth.ru/award?keyword=chemistry+notes+class+12th+pdf+download
    • https://ruloxewetufo.weebly.com/uploads/1/3/1/1/131164393/e79a11e6b.pdf
    • http://littlenat.space/coin_master_free_spins_android5w63a.pdf
    • https://sidugavumudoriz.weebly.com/uploads/1/3/4/9/134902227/pogubod.pdf
    • https://xajixaze.weebly.com/uploads/1/3/2/3/132302973/jerakiwolusi_xapati_fasubepap.pdf
    • http://muldwych.com/temepiwoxexurokhapxh.pdf
    • http://mestorating.ru/the_lottery_comprehension_questions_answers68zps.pdf
    • http://pagavopalubutu.scienceontheweb.net/43047684235.pdf
    • https://s3.amazonaws.com/fevobelijogal/championship_manager_97_98.pdf
    • https://s3.amazonaws.com/xoguwavosuje/asaram_bapu_photos.pdf
    • https://ea74ff18-003d-4094-8454-8d7e15e33abb.filesusr.com/ugd/50de67_882a02a0485a4f27b8d2e1a36c9b04b7.pdf?index=true
    • http://kivozusemu.atwebpages.com/jalanidhi_project.pdf
    • https://uploads.strikinglycdn.com/files/0022b4f2-5fff-4889-bca2-b7deb7324088/15205750836.pdf
    • https://uploads.strikinglycdn.com/files/8acd8b8a-e68f-473e-b10e-c3915f271866/2008_dodge_grand_caravan_headlight_assembly_removal.pdf
    • https://s3.amazonaws.com/fumiposamisur/46069043192.pdf
    • https://s3.amazonaws.com/lopeteb/honeywell_quiet_set_8-speed_oscillating_tower_fan_-_40_-_black.pdf
    • https://562c2315-396f-49d1-9e45-1236e049cb13.filesusr.com/ugd/ec0012_f4fd1a9dfb844543bf962db20e07d61e.pdf?index=true
    • https://s3.amazonaws.com/boduxatavepe/53334795429.pdf
    • https://bcd7deca-fd5d-492b-a220-d373ca515bc9.filesusr.com/ugd/12f4eb_a0fa5e89ae8f436fb860dbd542208ef2.pdf?index=true
    • http://najukelosuned.myartsonline.com/87182287701.pdf

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