Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff3e3a0ba62d5414…

MALICIOUS

PDF

74.4 KB Created: 2021-02-24 15:16:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f72a47ce096d15235f0f76dfcb2f8037 SHA-1: 975870f35190c373a1b7bbd4c8151627404f7ba7 SHA-256: ff3e3a0ba62d541473b6b5f3b7fa745b8a12e9d0475204648ef157c69827a96c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/wb?keyword=fifty%20shades%20of%20grey%20movie%20plot PDF link annotation
    • http://firstflirts.site/bimisijiniboxudulodiu4s93.pdfIn PDF document text
    • http://majelogajizivo.iblogger.org/rudovabowobesivesobar.pdfIn PDF document text
    • https://cdn.sqhk.co/nedabuke/hZhe4gd/99060890847.pdfIn PDF document text
    • https://cdn.sqhk.co/rusukumuva/9jggdjg/free_virus_scanner_app.pdfIn PDF document text
    • http://lnstagrambusiness.com/vajexewazilitixukaxuwujdcmj9.pdfIn PDF document text
    • https://cdn.sqhk.co/vibifexode/NjajgiS/mazavokefi.pdfIn PDF document text
    • https://cdn.sqhk.co/sidamebo/EQvjihd/mirror_touch_synesthesia_types.pdfIn PDF document text
    • http://natiral.space/what_does_a_confederacy_of_dunces_mean9rvkf.pdfIn PDF document text
    • http://lightstart.xyz/catalogo_natura_julio_2019f5exd.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/vogubivajavofu/psicologia_educativa_que_es.pdfIn PDF document text
    • http://zopopujeji.rf.gd/bosunobazefo.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/rakifejiranivosovowifebin.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/zebuwatefisujuwirax.pdfIn PDF document text
    • http://dazotetitow.epizy.com/72944271278.pdfIn PDF document text
    • http://xodenumaverap.epizy.com/bozivivaluzukiz.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_off0000e657.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE657 5572 bytes
SHA-256: 5a0cc563f04284fa3ad9cffdf9e852c33bd34438ab758207746340ed7599e831
font_01_sfnt_off0000f93a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF93A 10304 bytes
SHA-256: 629175ed7ed7fef88005beb40d011dd5d97d5ce3ea529f257ef6ee41200f82ed