Malicious PDF — malware analysis report

Static analysis result for SHA-256 8233197c9b4e1253…

MALICIOUS

PDF

70.1 KB Created: 2021-03-03 15:19:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f58c905f8da8bfb3cfbbba704c3e45aa SHA-1: 62b35deab92323d2a943bb3d71f54e59a4b7472f SHA-256: 8233197c9b4e12539ac26e9264ec3813bc23cafe2b001f414247253d4625f7b1
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://simakaxulov.weebly.com/uploads/1/3/0/7/130738785/99e827a.pdf.
  • 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://pelibifir.ru/wix?keyword=hotel+rwanda+film+study+questions+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368478/normal_600c7a9faef17.pdfIn PDF document text
    • https://simakaxulov.weebly.com/uploads/1/3/0/7/130738785/99e827a.pdfIn PDF document text
    • http://normaa-id.com/zepeposenovidajird6kxp.pdfIn PDF document text
    • http://jefevivavifax.scienceontheweb.net/pocket_icu_book.pdfIn PDF document text
    • https://wesodopudo.weebly.com/uploads/1/3/4/2/134234684/foresusivu.pdfIn PDF document text
    • http://dvestideyli.xyz/xifiminayt07v.pdfIn PDF document text
    • https://keduwiwisa.weebly.com/uploads/1/3/4/4/134486116/ea08262d42d541e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481402/normal_5ff65d71a1fb1.pdfIn PDF document text
    • http://megahit.space/54848388905yppor.pdfIn PDF document text
    • https://motanaweda.weebly.com/uploads/1/3/4/3/134316912/rolemikowabo.pdfIn PDF document text
    • http://moresukko.ru/par_quoi_remplacer_maizena_dans_flannl2q5.pdfIn PDF document text
    • http://sedouche.xyz/5_out_motion_offense_vs_2-3_zone2lq3b.pdfIn PDF document text
    • https://xisezuvu.weebly.com/uploads/1/3/4/0/134096300/lupufalotovi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408340/normal_6027d02e6581d.pdfIn PDF document text
    • https://digaporabanezaf.weebly.com/uploads/1/3/4/6/134689005/xubudilibudo_timaliwupule_napowejinag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kofaxafogi.myartsonline.com/mosajig.pdfIn PDF document text
    • http://bifovigavij.myartsonline.com/59663043614.pdfIn PDF document text
    • http://bufijonewufo.onlinewebshop.net/44448306019.pdfIn PDF document text
    • http://rivenoke.onlinewebshop.net/basic_pharmacology_for_nurses_16th_edition_free_download.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_off0000d651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD651 5336 bytes
SHA-256: f0207696eec053c20e26da8fd3f1e0db65fb21cd505a758b6053e07d43438877
font_01_sfnt_off0000e872.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE872 10104 bytes
SHA-256: b3f00963bec384db8a14a55e48550fd97273084d0aa09ea800e64167b414c95c