Malicious PDF — malware analysis report

Static analysis result for SHA-256 4107df17ebe3e154…

MALICIOUS

PDF

70.6 KB Created: 2021-02-20 15:54:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a9c89eca3b3cc874bc04925240884558 SHA-1: 8426cc8c5c435e4bcd096c1203b3ebaa7357b310 SHA-256: 4107df17ebe3e1546fb68e2d6992ded801467d757f6ab4c88e280a912d8bc22a
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://jacksth.ru/aws?utm_term=toro+power+clear+180+snow+blower PDF link annotation
    • http://shop-kid-toys.online/roman_numbers_1_to_1000_worksheett4ww0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450160/normal_60135a0dd505f.pdfIn PDF document text
    • http://storeeuro.info/47290790694bkz3p.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427795/normal_5ff001d13e169.pdfIn PDF document text
    • http://kudretbozaci.com/4541424628ug5us.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476285/normal_5fede67635425.pdfIn PDF document text
    • http://soxabezavusuxud.22web.org/songs_on_fakaza.pdfIn PDF document text
    • http://gtmedis.com/fishing_guide_jobs_northern_ontariomqtwb.pdfIn PDF document text
    • http://bred-enligne.com/29119095605vnr9z.pdfIn PDF document text
    • http://fortuneo.biz/juzakepasepab95okb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rewezaxow.epizy.com/attack_on_titan_live_wallpaper_apk.pdfIn PDF document text
    • http://fosufozixa.rf.gd/78798153260.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/tugijejalip.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/japezixolulisapu.pdfIn PDF document text
    • http://vemesedesalo.rf.gd/xogakotuxitimoz.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_off0000d721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD721 5496 bytes
SHA-256: cb13ecd7e40ea88794a63b4c7b6133ada8b76d798840f944b9aa67a1f56da0f6
font_01_sfnt_off0000e9ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9EC 10584 bytes
SHA-256: 3a2e22a08b099082bc51c74c5f101102ba169b1c5c64ea1a024bfc98dcfc85fb