Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a71eda33be0ffd1…

MALICIOUS

PDF

69.1 KB Created: 2021-03-06 01:39:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: eb94fb4c49c55d0a7df18797b66edeb3 SHA-1: ebbe0ef78fcb7554aefb23e4c665877e8846e148 SHA-256: 3a71eda33be0ffd152181d7f8c813f1936e658f36fc03adf88ca955bf8a90789
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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
  • 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://mezovuduw.ru/wix?keyword=yamaha+motif+xf+reference+manual+pdf PDF link annotation
    • http://shlifovka-pol.website/423871597082z47o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501645/normal_6042b6067d186.pdfIn PDF document text
    • http://coolmag.biz/navy_bdu_uniform_for_salegestj.pdfIn PDF document text
    • http://legko.travel/81013450903sknfh.pdfIn PDF document text
    • http://fruittea.space/14699189031drffl.pdfIn PDF document text
    • http://zokugorevat.mywebcommunity.org/55926761001.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446283/normal_601f3e6dd5d8a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484804/normal_5fe4db4d93257.pdfIn PDF document text
    • http://takaweri.mywebcommunity.org/pebarevunusevabilubu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367305/normal_6016f07104f7e.pdfIn PDF document text
    • http://theplafond.xyz/hp_designjet_500_24_driver_windows_10_64_bitom30x.pdfIn PDF document text
    • http://teaitalis.space/khan_academy_math_6th_grade_ratiosxvl6e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://55d63786-14d6-44de-84d0-33f1fb383c44.filesusr.com/ugd/45fd81_0327fbfa5c4340ba9ca0491c8e14e27e.pdf?index=trueIn PDF document text
    • https://299bc67c-4c9a-44ea-852c-18f2d39dca40.filesusr.com/ugd/954c8b_170e4b02c52941d3825cc16fc777661c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/782e2bf5-1185-4605-8085-b895ef5b25a6/how_many_carbs_in_taco_bell_fire_sauce.pdfIn PDF document text
    • http://sopexalibip.onlinewebshop.net/bissell_proheat_2x_revolution_pet_pro_19862.pdfIn PDF document text
    • http://jomupaz.myartsonline.com/jifevana.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/681eca8c-a7fb-40bb-a863-87e9404ac41b/53360919929.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86f931f9-2f43-4484-9d91-34b8ae1b833d/how_to_connect_kyocera_printer_to_mobile.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95d4f694-868c-4648-9d8f-7aab6e6322ef/mcat_full-length_practice_test_reddit.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_off0000d13a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD13A 5248 bytes
SHA-256: 8245779720d4ddca41cd7fba08abda2a1dd8b0aa5d982fcc0f59b82cd67b2742
font_01_sfnt_off0000e2f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2F1 10684 bytes
SHA-256: c32fa825d10a28c169bd14a925095ff9141ee061b78904130e1c6a30c746b12a

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