Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa2b6de7d5d76192…

MALICIOUS

PDF

69.3 KB Created: 2021-02-10 05:43:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 94f04820a1737b3ef397801a48fa5670 SHA-1: fc0ecd75e4ccc4c82e8a49ad500ad75886cf95f7 SHA-256: fa2b6de7d5d76192f32c279261885c3bebb49a42ea0c92996c7570e44f6397dc
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://jottigo.ru/wb?keyword=carnet%20sant%C3%A9%20b%C3%A9b%C3%A9%20pdf PDF link annotation
    • https://cdn.sqhk.co/rubekafux/hg1uTmW/nakonasagefu.pdfIn PDF document text
    • https://cdn.sqhk.co/webunojixisa/QNr2lhd/swamp_thing_season_2_hbo_max.pdfIn PDF document text
    • https://sitimewodojex.weebly.com/uploads/1/3/1/8/131856527/xawovafov.pdfIn PDF document text
    • http://vijufik.iblogger.org/string_format_java_double.pdfIn PDF document text
    • https://rofovotojoroko.weebly.com/uploads/1/3/4/8/134878837/cdc1857.pdfIn PDF document text
    • http://pufemebulod.22web.org/bagh_bandi_khela_movie_all_song.pdfIn PDF document text
    • https://kufobuzu.weebly.com/uploads/1/3/5/3/135330794/sazala_lewabidekiv.pdfIn PDF document text
    • https://jalusuduzewot.weebly.com/uploads/1/3/1/4/131456012/lozare.pdfIn PDF document text
    • https://cdn.sqhk.co/lafuwexale/hgMzLve/stuntman_salary_us.pdfIn PDF document text
    • http://vasugixoba.22web.org/mediabase_charts_top_40.pdfIn PDF document text
    • https://sevimuxeso.weebly.com/uploads/1/3/0/7/130739978/zamuzivoma-bokenoxepakakiz.pdfIn PDF document text
    • http://helps-lnstagramcopyrights-about.com/netter_atlas_of_human_anatomy_5th_editionr4737.pdfIn PDF document text
    • https://nivumumati.weebly.com/uploads/1/3/4/7/134703955/balavaxuze_nufum.pdfIn PDF document text
    • https://cdn.sqhk.co/mewedenemez/fmwigia/52292595463.pdfIn PDF document text
    • https://cdn.sqhk.co/madagijoj/CZoqUgi/jiomeet_app_download_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000cec0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEC0 5188 bytes
SHA-256: 1608d2bff4580b378166f658eb1a34cca3720b4c61c9ff40b52616b2db6de668
font_01_sfnt_off0000e026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE026 12260 bytes
SHA-256: bbbd263a97df978b6acd829d9c337949ba0f6c037cc49b0d77f70bfdb51a9340