Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbe3358b6a450a2c…

MALICIOUS

PDF

77.5 KB Created: 2021-04-01 12:28:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: fa75911fa9f8c8f41927b1cddb938631 SHA-1: 45bbcbf3a19d19437485beca47f3cc4cbb5dd118 SHA-256: dbe3358b6a450a2c7ca078f39cd07f7842cfe79da7cc412b350faff6e542a4d1
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV detection, indicating malicious intent. The document body, though heavily obfuscated, contains references to 'Google play store apks apk mirror' and an external URI pointing to 'botokaw.ru', suggesting a phishing or malware distribution lure. The presence of numerous embedded URLs, many pointing to disposable hosting, further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://botokaw.ru/123?utm_term=google+play+store+apks+apk+mirror PDF link annotation
    • http://lapiwudoxavov.scienceontheweb.net/bls_e_acls.pdfIn PDF document text
    • http://mofirixubutibi.getenjoyment.net/probabilistic_programming_and_bayesian_inference.pdfIn PDF document text
    • http://gomijexa.mywebcommunity.org/spin_angular_momentum_in_quantum_mechanics.pdfIn PDF document text
    • http://foxiduwanati.mygamesonline.org/keurig_mini_plus_black_friday_2019.pdfIn PDF document text
    • http://daludaja.getenjoyment.net/skyworth_tv_review_malaysia.pdfIn PDF document text
    • http://visetazide.medianewsonline.com/how_to_write_a_book_chapter.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zobuwijezad.onlinewebshop.net/6266054939.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b52462e-3549-4f60-a784-28b8189f97cf/coleman_furnace_repair_parts.pdfIn PDF document text
    • https://41be308f-8a64-4dec-8b30-4937605be974.filesusr.com/ugd/f042fe_7fbb7b75a4ab439db8434da07d03471f.pdf?index=trueIn PDF document text
    • http://fidalanono.myartsonline.com/dresden_files_rpg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dee371a7-20df-4fa0-9212-c9a59804e106/why_is_my_logitech_keyboard_not_working_with_my_ipad_pro.pdfIn PDF document text
    • http://pevogikuxupeja.onlinewebshop.net/64700127858.pdfIn PDF document text
    • http://vawivulumekil.onlinewebshop.net/biography_and_autobiography_book_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86c07d5e-2515-4e34-a749-d8bdc2ca7ba4/world_university_rankings_business_analytics.pdfIn PDF document text
    • http://kivozusemu.atwebpages.com/rheem_gas_furnace_prices.pdfIn PDF document text
    • https://237a2310-9536-43ad-add1-fe73b840a51a.filesusr.com/ugd/8b319d_a0840cab68174f1a9d4dc83830256235.pdf?index=trueIn PDF document text
    • http://tediguku.atwebpages.com/simlab_3d_exporter_for_sketchup.pdfIn PDF document text
    • http://jaweratiz.atwebpages.com/40132705132.pdfIn PDF document text
    • http://nukilaba.myartsonline.com/17_day_diet_cycle_1_grocery_list.pdfIn PDF document text
    • http://xizokenimufewom.atwebpages.com/retusagubogajitedagoni.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1AF 5336 bytes
SHA-256: 868815dd1fc89a92ac98880d43b9019e2101fdc4f12e8a94dfa166077543a948
font_01_sfnt_off000103d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103D4 10744 bytes
SHA-256: b96316fd16704db6d68d2b5012abd4684edc389917669750174fc42b437d041e

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