Malicious PDF — malware analysis report

Static analysis result for SHA-256 77c03eeb84c47b63…

MALICIOUS

PDF

71.4 KB Created: 2021-02-24 23:43:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 47ac483e8450a9b56cfcfe74a4cacae4 SHA-1: f5f71279c2e2997dd76fbb03351241459e6aa081 SHA-256: 77c03eeb84c47b6350523b144dcd0a7400d09cea731aedb34c75c7e01df9bc7d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jacksth.ru/wix?keyword=fisica+conceptos+y+aplicaciones+7+pdf+gratis PDF link annotation
    • https://cdn.sqhk.co/kulobuwaxegu/hi66gh5/48870743890.pdfIn PDF document text
    • http://desokore.medianewsonline.com/sketchbook_brushes_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382960/normal_5fe320410e570.pdfIn PDF document text
    • https://cdn.sqhk.co/fopujetoros/i6phdgh/19820145290.pdfIn PDF document text
    • https://cdn.sqhk.co/pojuzijix/7Doihhb/7202445210.pdfIn PDF document text
    • https://cdn.sqhk.co/kosaboze/hcm0TVJ/air_controls_bozeman_bozeman_mt_59718.pdfIn PDF document text
    • http://iqecoportal.ru/70259447474cdp4z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417406/normal_5fd2fac1354f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377098/normal_60135aa1155aa.pdfIn PDF document text
    • http://ontrade.top/akka_framework_tutorialmb4z6.pdfIn PDF document text
    • https://cdn.sqhk.co/jabuvilir/gPVGvU5/90093358774.pdfIn PDF document text
    • http://dk-inc.xyz/boye_round_loom_set_instructionsq72bj.pdfIn PDF document text
    • http://gefosezidubajoz.scienceontheweb.net/11399059215.pdfIn PDF document text
    • https://cdn.sqhk.co/pixukinoma/bXxxdii/pac_man_level_256_play.pdfIn PDF document text
    • http://help-copyrighteamservice.com/685574995070r32i.pdfIn PDF document text
    • https://cdn.sqhk.co/moturalogupe/ghVjejc/okc_thunder_coach_news.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/woxojuxafopuv/scientific_calculator_apps_for_mobile.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/mefifonexeribumofakonizep.pdfIn PDF document text
    • https://s3.amazonaws.com/jarirotexab/59904346717.pdfIn PDF document text
    • http://rulamiji.onlinewebshop.net/senujaredokuwinijimisoke.pdfIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/krups_burr_grinder_manual.pdfIn PDF document text
    • http://nabenejajoko.myartsonline.com/4106657262.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_off0000d594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD594 5460 bytes
SHA-256: 609d07ddcedb3f22cadd8ec929344fc7b2ac5756407ab4ffa6ebfb83b0a41dbb
font_01_sfnt_off0000e850.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE850 11744 bytes
SHA-256: 8c34ac06797200d6bf195d20593369be41a796dff21d2cfd84d938999240f955

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