Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9bec33579318887…

MALICIOUS

PDF

42.0 KB Created: 2021-03-23 11:29:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 0d60f0504c697b55af5ff57c350130b1 SHA-1: 80b72925581792be52abc687e373d2f8227a1b2f SHA-256: b9bec33579318887a0ef8a6fafc2ae03dbd093ac2d2caf60a770e4d466035442
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as a phishing lure due to its image-only nature and embedded clickable link. The heuristic 'PDF_IMAGE_LURE' indicates a typical shape for a phishing document where a screenshot hides a button. The embedded URL, 'https://xajibur.ru/award?keyword=ch+4+chemistry+class+11+notes+pdf', is the primary indicator of the malicious intent, likely leading to a phishing page or malware download. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6244

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 42 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://xajibur.ru/award?keyword=ch+4+chemistry+class+11+notes+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4406516/normal_603a219716f2c.pdfIn PDF document text
    • http://gikepofazanapol.mypressonline.com/quality_assurance_techniques.pdfIn PDF document text
    • https://cdn.sqhk.co/sadopore/F4hbjj9/50677910850.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496816/normal_5fef4d5715b8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416930/normal_605706d1ae754.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407793/normal_5ffdd409cf05c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422906/normal_6017c6bbab78f.pdfIn PDF document text
    • https://cdn.sqhk.co/tobijoge/D2idicJ/nuclear_strike_bomber_unlimited_money.pdfIn PDF document text
    • https://cdn.sqhk.co/vasegodesazu/738SdE0/pocket_tanks_mod_apk_2._4_1.pdfIn PDF document text
    • http://ibkreactiva2020.com/ck2_organize_raidw3bju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413712/normal_60140c2b53ee2.pdfIn PDF document text
    • https://cdn.sqhk.co/tosijoxopum/1wbO0ii/zijawuxiba.pdfIn PDF document text
    • http://wijetaz.mypressonline.com/pdf_to_word_converter_google_docs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446511/normal_604b551acdb44.pdfIn PDF document text
    • https://cdn.sqhk.co/zeburozupax/hdqhige/tejof.pdfIn PDF document text
    • http://pitushok.space/where_can_i_purchase_a_george_foreman_grillnsywc.pdfIn PDF document text
    • https://cdn.sqhk.co/dadirowuj/cSgdFoK/dawipu.pdfIn PDF document text
    • https://cdn.sqhk.co/jebanufebejo/7n1Im8H/minecraft_mansion_seed_2020_pe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415527/normal_603618aaf30b8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447252/normal_604f3976af0ae.pdfIn PDF document text
    • http://xsale.trade/greensleeves_flute_solo_sheet_musicmrply.pdfIn PDF document text
    • http://youtube-subscribes.com/nitusuwazekesudugozesaxe4g1fo.pdfIn PDF document text
    • https://cdn.sqhk.co/wolowivem/njRgcHm/vutidusejer.pdfIn PDF document text
    • https://cdn.sqhk.co/kadeposamo/7kififk/ticket_to_ride_for_playlink.pdfIn PDF document text
    • http://naturebiolog.space/what_does_newsmax_say_about_the_election_resultstu797.pdfIn PDF document text
    • http://bototiluwoge.atwebpages.com/fetedofegagurog.pdfIn PDF document text

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