Malicious PDF — malware analysis report

Static analysis result for SHA-256 f94321f98f239e3c…

MALICIOUS

PDF

68.3 KB Created: 2021-02-28 23:12:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 26415e4b5acdd473f64eb9bed4e90326 SHA-1: 2612baee766cb4f6706d13d44f0409ae34675e5b SHA-256: f94321f98f239e3c502bed99abb112be5a42de8a7f2ddeb76b2bdf0699336489
186 Risk Score

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 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.
  • 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://kuzutuzo.ru/award?keyword=if+it%2527s+okay+in+spanish PDF link annotation
    • https://cdn.sqhk.co/tixuniwe/aKelccv/clouds_movie_disney_plus_trailer.pdfIn PDF document text
    • https://cdn.sqhk.co/zezinojox/hMijjiV/falavo.pdfIn PDF document text
    • https://cdn.sqhk.co/kebabefepu/jELshjz/57313478831.pdfIn PDF document text
    • https://xugepofu.weebly.com/uploads/1/3/1/3/131383580/dozujimebib.pdfIn PDF document text
    • https://gefetejumifigo.weebly.com/uploads/1/3/4/6/134688955/017f5.pdfIn PDF document text
    • http://rozujed.sportsontheweb.net/harbor_freight_scroll_saw_vs_wen_scroll_saw.pdfIn PDF document text
    • https://jutewalezozapon.weebly.com/uploads/1/3/4/0/134016751/sesav-gakoguxewisuv-gopisix-xedexuvirom.pdfIn PDF document text
    • https://kinetatosutozi.weebly.com/uploads/1/3/2/7/132740742/veragajozugi.pdfIn PDF document text
    • https://cdn.sqhk.co/salavogi/gcgfpNr/43031049145.pdfIn PDF document text
    • https://sefokuto.weebly.com/uploads/1/3/0/7/130738721/jibegozutaruneg.pdfIn PDF document text
    • http://zugugalepew.mypressonline.com/how_to_do_a_voltage_drop_test_on_fuel_pump_relay.pdfIn PDF document text
    • https://gikotibosad.weebly.com/uploads/1/3/4/3/134332820/6422516.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/how_to_clear_guides_in_photoshop.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/87111526108.pdfIn PDF document text
    • http://rosajeku.myartsonline.com/dark_souls_3_save_file_download_ps4.pdfIn PDF document text
    • http://zijomofi.epizy.com/78207312960.pdfIn PDF document text
    • http://kofaxafogi.myartsonline.com/nikunamufuvuviwu.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/human_body_systems_list.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_off0000cdb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDB2 5000 bytes
SHA-256: 8b0918dd408ba0fe3f9229663d8cec35aaad79f845ab9bb219981ab205b9e59d
font_01_sfnt_off0000dece.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDECE 11832 bytes
SHA-256: c6b53fe4d08367bab6467d75ec021366852c489b6290454117db1fa5b258d17a

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