Malicious PDF — malware analysis report

Static analysis result for SHA-256 22f4a019de5f8330…

MALICIOUS

PDF

68.6 KB Created: 2021-02-01 10:15:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 2910df3b6882110156793cf530e37da0 SHA-1: 1bd5c454f7c66f1670c9a16b5ccd7636e21cc298 SHA-256: 22f4a019de5f8330b765237b2877dfed9f72606afefb5e14fb9ff0bb44f8f000
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/123?utm_term=chandler+4+corners PDF link annotation
    • https://cdn.sqhk.co/tajiwikiter/jiiXhhc/nifoziwugarow.pdfIn PDF document text
    • http://yoga-fitness.space/21582932201yskp4.pdfIn PDF document text
    • https://cdn.sqhk.co/navimoxa/Eiajfjj/fodademebafuwuzikokituje.pdfIn PDF document text
    • https://cdn.sqhk.co/raxoxawupej/f9jdijb/ps4_emulator_apk_ios_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403951/normal_5feb8b7a5d6ea.pdfIn PDF document text
    • http://helpforteam.com/learn_php_html_cssf1pc0.pdfIn PDF document text
    • http://bluebadgeform.com/mcgraw_hill_wonders_4th_gradeeud0u.pdfIn PDF document text
    • https://cdn.sqhk.co/dofexoxev/gctEkyP/game_maker_studio_2_dnd_platformer.pdfIn PDF document text
    • http://remontnatali.ru/libros_sobre_el_reclutamiento_y_seleccion_de_personalddix4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407085/normal_5fd7aba688b7c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502178/normal_5fd9039f17521.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422897/normal_5ff6947ceeac5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446394/normal_600dfa648cd72.pdfIn PDF document text
    • https://cdn.sqhk.co/vimewiki/hvaHges/pigotibobomanojururelaxo.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/jaloto/service_level_agreement_examples.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_off0000d059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD059 5020 bytes
SHA-256: 3428228cb527c471b8e154165810d59774ded1406dd152725a623e11a52cc315
font_01_sfnt_off0000e160.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE160 10772 bytes
SHA-256: a2c25f2af6fcdc6b33c8b37fbc39bc52c92ac68b25c6e89fa7aa182444ad8c6e