Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd8ebd83db275ba2…

MALICIOUS

PDF

69.0 KB Created: 2021-01-30 22:11:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 358921cd48299ffa89e41921f40a5125 SHA-1: 781325f8ae03a381214c73268861dd423421fb3d SHA-256: dd8ebd83db275ba2c0f3218e119c57748097619581f6e3a621c1a801c1a22402
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://trafftec.ru/wb?keyword=free%20music%20for%20videos%20no%20attribution PDF link annotation
    • http://true-board1.club/37876853254vbo4x.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426687/normal_60159326e583a.pdfIn PDF document text
    • http://igme.site/meritnation_cbse_icse_more_free_live_classesz12lj.pdfIn PDF document text
    • http://requiremcgood.com/hana_kimi_read_onlinequi3r.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401559/normal_6002fb0497a49.pdfIn PDF document text
    • http://fapumew.22web.org/60741512989.pdfIn PDF document text
    • http://roxopazin.iblogger.org/free_uc_browser_for_windows_10.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455898/normal_5fdf5d3888b21.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jifusewu.epizy.com/gy-_801_datasheet.pdfIn PDF document text
    • http://siwomiwededu.epizy.com/8292568482.pdfIn PDF document text
    • http://nanisoz.epizy.com/t_shirt_design_template_psd.pdfIn PDF document text
    • http://zatunikepozis.epizy.com/aquaero_6_lt_manual.pdfIn PDF document text
    • http://sivopob.epizy.com/vidijewisaliduxibewexele.pdfIn PDF document text
    • http://janofegiwene.epizy.com/are_criminals_born_or_made.pdfIn PDF document text
    • http://kipafiperugava.epizy.com/37674440653.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_off0000cfac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFAC 5288 bytes
SHA-256: aaea57e9834755d15980a9fe9a89777182f3bce17127613c24b8e5ae75fffcf0
font_01_sfnt_off0000e19d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE19D 11460 bytes
SHA-256: 0659f30cfbf79166242ca0ac20df65368801cd2253715dfea000a021244f0a8f