Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc4c404b103c8727…

MALICIOUS

PDF

67.6 KB Created: 2021-03-02 17:45:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: affcc62e75b763d2506318657a18c11c SHA-1: 18ce26ed426673d62bd069d6072a0f7c9f76a0c5 SHA-256: dc4c404b103c872714cfcecf86a4ad47af3e670600bdd142ce5944255bd0036b
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://fokemale.ru/wix?keyword=solving+systems+of+equations+by+graphing+worksheet+doc PDF link annotation
    • http://mobufuwiwid.medianewsonline.com/nuwebudanupomoranane.pdfIn PDF document text
    • http://lumacy.site/naxezejogarolopewuliro67tn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503987/normal_5ffaca1a5f2e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417664/normal_603e34f5e6a25.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387243/normal_5ff9594985f90.pdfIn PDF document text
    • http://politach.com/you_ve_been_jingled_template27vcr.pdfIn PDF document text
    • http://zotonurapad.22web.org/brownian_movement_movie_parents_guide.pdfIn PDF document text
    • http://watertea.space/charles_aznavour_for_me_formidable_partitionzsq1j.pdfIn PDF document text
    • http://electriccannoz.club/13235899745odw5c.pdfIn PDF document text
    • http://onlineeshop24.xyz/vintage_delta_bandsaw_fenceezi5k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443588/normal_603c255d2b8ed.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://poruzimikipazan.epizy.com/ambalapuzha_kadavil_vacho_video_song.pdfIn PDF document text
    • http://wuwedilejom.myartsonline.com/which_is_the_best_denture_adhesive_uk.pdfIn PDF document text
    • http://jariduzirozew.epizy.com/vajarovufupimaruw.pdfIn PDF document text
    • http://dawutanarav.epizy.com/50237802299.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_off0000cb33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB33 6256 bytes
SHA-256: 5bb44a60115fcf64c8fcc81279bbc92f5b340e2f79db60831c43f45f1d0cac6e
font_01_sfnt_off0000e05f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE05F 9632 bytes
SHA-256: 7c7afae7b741dc034285178ba7fe551687a76eb029be6b4b6209937edd4bba2e