Malicious PDF — malware analysis report

Static analysis result for SHA-256 f910da12dc514ad1…

MALICIOUS

PDF

71.4 KB Created: 2021-02-26 17:05:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 405836148caf920d06f58182331e513e SHA-1: b61c824e362818bbf7e75177ad05ad82b6b60590 SHA-256: f910da12dc514ad1ce67e165032a8b544bc226bbefaa07435d21f73cae26d351
134 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=how+to+replace+a+singer+bobbin+case PDF link annotation
    • http://kerutugizuxig.mygamesonline.org/attack_on_titan_season_3_part_1_ending.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/WP1jggc/my_super_movie_lyrics.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463551/normal_602225f512366.pdfIn PDF document text
    • https://cdn.sqhk.co/jisanipu/gbbWphe/rufawakovireneterojaxesed.pdfIn PDF document text
    • http://9gusevshop.space/xogaximepitugososikimoxuk5h33.pdfIn PDF document text
    • http://bestpriceforukraine.xyz/fase_latente_prolongadapcyow.pdfIn PDF document text
    • http://healthit.space/harry_potter_funko_pop_advent_calendar_2020_australiayap5i.pdfIn PDF document text
    • http://fazejajogavu.medianewsonline.com/columbus_blue_jackets_schedule_tv.pdfIn PDF document text
    • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/wedazovawowisu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466411/normal_60309960d55bb.pdfIn PDF document text
    • https://cdn.sqhk.co/lubometusoz/ijbjfjb/72907299566.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365576/normal_6001e709a5d5f.pdfIn PDF document text
    • https://cdn.sqhk.co/kumotuxijufu/jkiecgg/batinoxirepilikaxilesu.pdfIn PDF document text
    • http://rowowevu.mypressonline.com/2013_subaru_impreza_wrx_hatchback_automatic_transmission.pdfIn PDF document text
    • http://llloooodddd.space/sociedad_de_jovenes_adventistastxo8o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427526/normal_602948e8dc16f.pdfIn PDF document text
    • http://pinegobojefo.getenjoyment.net/masefokozazomaxeliza.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://duxuramubot.epizy.com/xurav.pdfIn PDF document text
    • http://tumewadeb.epizy.com/mubuzelinuzesofurik.pdfIn PDF document text
    • http://vasiruduwoju.epizy.com/32573984491.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_off0000da83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA83 5292 bytes
SHA-256: b6e26b833d5e698ce0ebae977103716944a7f9e1f718a32eb7421af5fdd42e68
font_01_sfnt_off0000ec9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC9D 10472 bytes
SHA-256: a9b73fdf5537a154b43168d321befff3fce4acfb7d8f9d02171fe131301135aa