Malicious PDF — malware analysis report

Static analysis result for SHA-256 c83d551e126f2b21…

MALICIOUS

PDF

72.4 KB Created: 2021-02-12 19:24:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 35e78c0f319385886144793bc035f8cb SHA-1: a91de4556062bf6300e86250d2e6be712c6847d7 SHA-256: c83d551e126f2b21219355127a544e246bf4b59adb9ea242923a8e1be44a5303
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=2005+polaris+predator+500+service+manual+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4418381/normal_5ff3b2a8ace1b.pdfIn PDF document text
    • https://banafovogakake.weebly.com/uploads/1/3/5/3/135326552/7619913.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453537/normal_600a753cb5d6d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468270/normal_5ff0020fd6446.pdfIn PDF document text
    • http://com-signto6.xyz/16339527708w1f5e.pdfIn PDF document text
    • https://tunugezujemis.weebly.com/uploads/1/3/4/3/134307821/3edb84.pdfIn PDF document text
    • https://wemizufatevovig.weebly.com/uploads/1/3/4/8/134896488/aaa611.pdfIn PDF document text
    • http://iblack.space/rurititimafur95pcg.pdfIn PDF document text
    • https://numeroluxovuz.weebly.com/uploads/1/3/4/7/134733954/pepikazojod.pdfIn PDF document text
    • http://i12tws.website/reridee293q.pdfIn PDF document text
    • http://wanebori.22web.org/33356804997.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://felepukagerek.epizy.com/jafawobiruloniwopoxakoj.pdfIn PDF document text
    • http://borinalujid.epizy.com/pipuxofuwekoriwoxuvulupov.pdfIn PDF document text
    • http://vavijirodujozi.rf.gd/41486838783.pdfIn PDF document text
    • http://xojutavuvexiso.rf.gd/lixabapemufagaxomeropez.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/until_dawn_blood_rush_trophy_guide.pdfIn PDF document text
    • http://jofawapedoguw.rf.gd/manually_add_addons_to_wow.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/58841581416.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_off0000dabe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDABE 5664 bytes
SHA-256: fc60becc9d0fe49044401212acb0beb6de3dbece9b4524d8c251cb2f33b72cdd
font_01_sfnt_off0000edfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDFA 10972 bytes
SHA-256: ce2154ae1eb1e471088e732bae8f49ed2fc9d77ade88e278fa7f2f5eefc470e6