Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b26a0aa93b7dd23…

MALICIOUS

PDF

71.7 KB Created: 2021-02-12 16:51:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b938f86966520ac49b45374d36615888 SHA-1: 5a5d2eb428f4be489c1862fd2f9d21c84e8ca0d1 SHA-256: 0b26a0aa93b7dd23de184768b6569e64b18bf85ca79199117ff866dacfa0b9a2
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/wix?keyword=life+application+bible+studies+romans+pdf PDF link annotation
    • https://zafozudakajadev.weebly.com/uploads/1/3/0/8/130814863/tabekalitil.pdfIn PDF document text
    • https://ruwatija.weebly.com/uploads/1/3/4/8/134846771/mukopomejejolag.pdfIn PDF document text
    • https://cdn.sqhk.co/vefapatape/hjrheje/8968078524.pdfIn PDF document text
    • https://cdn.sqhk.co/lafuwexale/exhbvhe/bejeweled_3_classic_online_game_pogo.pdfIn PDF document text
    • https://cdn.sqhk.co/lanamixese/cjhjfDb/87440145442.pdfIn PDF document text
    • https://cdn.sqhk.co/bagadogod/yHbwgiF/steam_table_calculator_pressure_and_temperature.pdfIn PDF document text
    • https://cdn.sqhk.co/mibazudifij/ibujfge/crazy_rich_man_sim_boss_mod_apk.pdfIn PDF document text
    • http://susarivusu.22web.org/18979052915.pdfIn PDF document text
    • https://cdn.sqhk.co/juxerawabuf/jgJjcih/dirt_bike_stunt_race_free_2d_adventures.pdfIn PDF document text
    • https://togimapobeno.weebly.com/uploads/1/3/4/6/134649298/nemuvewujoniwi_tixovefojefato.pdfIn PDF document text
    • https://cdn.sqhk.co/dedogupazib/eYggjdw/smart_connect_netgear_r7800.pdfIn PDF document text
    • https://livugazenexaru.weebly.com/uploads/1/3/1/6/131607095/e6412.pdfIn PDF document text
    • https://cdn.sqhk.co/nedabuke/kjerjij/sea_battle_world_war_1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xegukamadoso.epizy.com/auricular_definicion_informatica.pdfIn PDF document text
    • http://fukasutatota.rf.gd/33487457981.pdfIn PDF document text
    • http://mevalegija.rf.gd/39797182146.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_off0000dd5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD5E 5384 bytes
SHA-256: be0f86d1a8fadd7b80d1e9c3073fa501946151cd36f4fa29902dfd9d57022432
font_01_sfnt_off0000ef8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF8F 10008 bytes
SHA-256: dc44b0853882f2ee1983a58ad4484b1013e8a7b30b329cfce741033fd85d0120