Malicious PDF — malware analysis report

Static analysis result for SHA-256 f551682cd61c1082…

MALICIOUS

PDF

71.2 KB Created: 2021-03-03 19:51:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 5c2eb8895b2a832032251107ab93e488 SHA-1: babb06b0dbf4ac5c64ee363870a3cec1c7cc0a88 SHA-256: f551682cd61c1082244a343c232250928cebbb304b597dcebdb6d288cd910fb2
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://xajibur.ru/award?keyword=universal+remote+for+magnavox+dvd+vcr+combo PDF link annotation
    • http://segwaywheelchair.ru/conditional_variance_swap3vq5q.pdfIn PDF document text
    • http://daludaja.getenjoyment.net/how_to_insert_diaper_genie_refill.pdfIn PDF document text
    • https://cdn.sqhk.co/pazakazagoz/git3Iid/rilotavefe.pdfIn PDF document text
    • http://busibear.com/download_crisis_core_iso_highly_compressedpppzb.pdfIn PDF document text
    • http://basiditdcf.space/sevimiboduv2356.pdfIn PDF document text
    • https://cdn.sqhk.co/zujubokave/jdiczDh/seguwakubomutabufo.pdfIn PDF document text
    • http://shtancircul.site/oontz_curve_bluetooth_speakerqpo1y.pdfIn PDF document text
    • https://cdn.sqhk.co/nufomewo/ihXtOjd/cthulhu_2020_shirt.pdfIn PDF document text
    • https://cdn.sqhk.co/kerametunal/fWqZID9/musurar.pdfIn PDF document text
    • https://fomodefoz.weebly.com/uploads/1/3/5/9/135958111/nipatal_jukagifalezo_kelod_diguta.pdfIn PDF document text
    • https://cdn.sqhk.co/xogudililavo/heib2gi/monster_castle_hack_apk_ios.pdfIn PDF document text
    • https://nojinogexosop.weebly.com/uploads/1/3/4/6/134695112/8bba4e6d067d6.pdfIn PDF document text
    • http://nitapida.mywebcommunity.org/lemony_snickets_a_series_of_unfortunate_events_pc_game_free_download.pdfIn PDF document text
    • http://brightshopbg.xyz/hansel__gretel_witch_hunters_2013_brrip_720p_dual_audiormu0f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zitadufafasid.onlinewebshop.net/how_to_hook_xfinity_cable_box_to_tv.pdfIn PDF document text
    • http://fataragoreb.myartsonline.com/kenmore_coldspot_model_106_dimensions.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_off0000db45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB45 5600 bytes
SHA-256: d6da4832a5bc7294e42fe47a38aed31c84c83a796fc29e8812c296a9e4d70d9c
font_01_sfnt_off0000ee48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE48 9716 bytes
SHA-256: 40226ada284ef18d41cd652bb1784eb420264455d19897beb9f9c8ca41910d9a