Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ac37fc6d9c8e470…

MALICIOUS

PDF

72.1 KB Created: 2021-02-27 13:51:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5577fd5ba76fa93ab4701b5aa3094781 SHA-1: 2fc81266dbb2c909087e388d28aa68bcd89b14ab SHA-256: 3ac37fc6d9c8e47014c48ea36b243594a0cbc40bc226239e078a6d11d2fecf6a
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/wix?keyword=drastic+apk+free PDF link annotation
    • http://gekodejevotug.medianewsonline.com/6262967886.pdfIn PDF document text
    • http://kuzexamipapoxip.medianewsonline.com/asus_rt-ac66u_openvpn_server_setup.pdfIn PDF document text
    • http://fefiwizam.sportsontheweb.net/cloud_computing_examples_website.pdfIn PDF document text
    • http://kirakexig.mypressonline.com/how_to_service_a_2_ton_floor_jack.pdfIn PDF document text
    • http://bomaduworofa.medianewsonline.com/tapamovakunovivij.pdfIn PDF document text
    • https://xelixaxoso.weebly.com/uploads/1/3/1/4/131407481/bda78982c.pdfIn PDF document text
    • https://cdn.sqhk.co/repipedifavi/gjPiajc/kleptocats_codes_patio.pdfIn PDF document text
    • https://gideturifit.weebly.com/uploads/1/3/4/8/134887905/9400138.pdfIn PDF document text
    • https://dagaroxir.weebly.com/uploads/1/3/5/9/135973008/liduto.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sorisavitekinuj.onlinewebshop.net/xemotakip.pdfIn PDF document text
    • http://zitadufafasid.onlinewebshop.net/towuga.pdfIn PDF document text
    • http://kavibajegis.onlinewebshop.net/50260945984.pdfIn PDF document text
    • http://titugol.atwebpages.com/dell_optiplex_9020_sff_computer.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_off0000e08e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE08E 5040 bytes
SHA-256: 0f170a946267fbfbe6fe590a433598ff715a26296b2eacd5a5087c3f64a7e4b9
font_01_sfnt_off0000f1cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1CC 9960 bytes
SHA-256: 214b08129affb2606d7066da16e3ec495f309db70ece0b1c1f106100b4579c36