Malicious PDF — malware analysis report

Static analysis result for SHA-256 acce26c88c8a43b9…

MALICIOUS

PDF

70.9 KB Created: 2021-02-26 19:30:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 96004a0c1250217d615b0346db9e6d01 SHA-1: afa8c12d5bbdd6a2c04e0206a01e85571ec3f21f SHA-256: acce26c88c8a43b9dd7f56f41f4334ea0362467d79d589cc5c552d9a6429e4b1
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://fokemale.ru/wb?keyword=woods%20indoor%20digital%20timer%20instructions PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4366984/normal_5fecf46787732.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450721/normal_5ff4446b7ecf4.pdfIn PDF document text
    • https://judadumoxa.weebly.com/uploads/1/3/4/7/134718892/8233045.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404313/normal_5fceb2578b89e.pdfIn PDF document text
    • https://tesitibu.weebly.com/uploads/1/3/4/7/134712385/3621697.pdfIn PDF document text
    • https://cdn.sqhk.co/marezotije/S4GIQjj/minecraft_bendy_mod_apk_god_mode.pdfIn PDF document text
    • http://wameduxuka.iblogger.org/zibirur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443610/normal_5fd7976a5ab3c.pdfIn PDF document text
    • https://nigusejokolutat.weebly.com/uploads/1/3/4/6/134688827/rekawiwijom_mafos_puvil.pdfIn PDF document text
    • https://rusipamisu.weebly.com/uploads/1/3/4/0/134017355/6387865.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402246/normal_601a8266ab7b9.pdfIn PDF document text
    • https://mokufanogokotim.weebly.com/uploads/1/3/1/4/131406807/ritupemekogaw.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/bejexe/java_windows_7_ultimate_32_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/bufexa/64915574834.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/chukka_sattaiah_mallanna_oggu_katha_free.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_off0000d72d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD72D 5272 bytes
SHA-256: 150bb3bab23470cbef38d13e86b2e3df63869f1b1b77ddf7a273e7535ce21757
font_01_sfnt_off0000e911.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE911 10468 bytes
SHA-256: 37bfadcbf2baa2e0cfabb45418651448081e4c157ecbe50067511b001c0e9ef8