Malicious PDF — malware analysis report

Static analysis result for SHA-256 68543f9bb840c4b8…

MALICIOUS

PDF

70.3 KB Created: 2021-02-13 01:14:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: de5694168555f74e3056ad3edeea918f SHA-1: da2fdd1dcebb475106e2ed8aae1151cf8f91e74e SHA-256: 68543f9bb840c4b81429aeda8136eb845b1e84dd4ea30917503275611c5b5550
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://jacksth.ru/wix?keyword=grinding+it+out+ray+kroc+pdf+download PDF link annotation
    • https://cdn.sqhk.co/xogudililavo/5V5Wjfn/stickman_zombie_shooter_3_mod_apk.pdfIn PDF document text
    • https://lukuxafibufogi.weebly.com/uploads/1/3/5/4/135400428/2952407.pdfIn PDF document text
    • https://cdn.sqhk.co/giruzegovu/chc2ibC/41526921546.pdfIn PDF document text
    • https://zusabave.weebly.com/uploads/1/3/1/4/131406295/7ff2cafc37.pdfIn PDF document text
    • https://tebafazar.weebly.com/uploads/1/3/4/2/134265880/7fd62bd81bdc4.pdfIn PDF document text
    • https://severuzilun.weebly.com/uploads/1/3/4/7/134710190/zuwimim-nugofa.pdfIn PDF document text
    • https://nogexumojadug.weebly.com/uploads/1/3/4/2/134235638/fabivuliloruku.pdfIn PDF document text
    • https://xofivexaroza.weebly.com/uploads/1/3/4/3/134321457/koroxibezute.pdfIn PDF document text
    • https://visimekariluvog.weebly.com/uploads/1/3/1/4/131483525/wupegogakewedijuxox.pdfIn PDF document text
    • https://cdn.sqhk.co/xipepovivik/jcBIAib/lock_screen_live_wallpaper_app_download.pdfIn PDF document text
    • https://cdn.sqhk.co/bogulevim/gfyf2ic/pojebolenusaxopobiw.pdfIn PDF document text
    • https://kujibolivobukib.weebly.com/uploads/1/3/1/1/131163991/timiburazumi.pdfIn PDF document text
    • https://fupopafesuz.weebly.com/uploads/1/3/4/4/134443157/987530.pdfIn PDF document text
    • https://pozanabuloga.weebly.com/uploads/1/3/4/3/134366917/6865120.pdfIn PDF document text
    • https://zugavalomiseba.weebly.com/uploads/1/3/6/0/136082075/9209136.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/paxuvagal/vehicle_number_information_details.pdfIn PDF document text
    • http://zatafefot.rf.gd/losakorafijubofixobajo.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/28231721897.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_off0000d686.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD686 5432 bytes
SHA-256: 0610415cd576f66018d106906e998a924b80b7c8c460d6817eca8e55dd896489
font_01_sfnt_off0000e938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE938 10232 bytes
SHA-256: 744c35daeb376ec56f287b60795be7363f70010b117c88f970f41a2dc680db28

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