Malicious PDF — malware analysis report

Static analysis result for SHA-256 196ed81ddea4d064…

MALICIOUS

PDF

69.9 KB Created: 2021-02-27 16:22:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 40982e25e977c8f90059f0c6562123eb SHA-1: 0825dd7cad25cd61a132de616468479e8b339516 SHA-256: 196ed81ddea4d06458ebb67a4dee517047dc32d3252f707043fe800003ff4856
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://dafemum.ru/award?keyword=2013+bmw+328i+garage+door+opener+programming In PDF document text
    • http://nanebaxexob.getenjoyment.net/sun_joe_spx3000_weight.pdfIn PDF document text
    • https://vizejuvevu.weebly.com/uploads/1/3/2/6/132681979/1253659.pdfIn PDF document text
    • https://lemefiware.weebly.com/uploads/1/3/4/0/134017231/7805349.pdfIn PDF document text
    • https://ritibamubube.weebly.com/uploads/1/3/1/4/131437410/jakemoregidemuku.pdfIn PDF document text
    • https://cdn.sqhk.co/mevazasid/gcgge1U/fulldive_browser_fast_money_browser_and_adblock.pdfIn PDF document text
    • https://bogekivusuwi.weebly.com/uploads/1/3/4/6/134604255/refoxefotufepugidufa.pdfIn PDF document text
    • http://sowoxapexemex.sportsontheweb.net/77493054864.pdfIn PDF document text
    • http://wumewil.sportsontheweb.net/72971151064.pdfIn PDF document text
    • http://xogunajeraxuda.mywebcommunity.org/suvanuvilobikiruwubimop.pdfIn PDF document text
    • https://fobijolosa.weebly.com/uploads/1/3/4/7/134730704/2eada0a73d1.pdfIn PDF document text
    • https://peletawipimo.weebly.com/uploads/1/3/4/4/134444154/pidavivavubu.pdfIn PDF document text
    • https://jadusulad.weebly.com/uploads/1/3/4/7/134764450/8772566.pdfIn PDF document text
    • http://figimumagoko.mygamesonline.org/guwemurelabuneposomukeli.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mefirakuk.epizy.com/the_theory_toolbox_sparknotes.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_off0000d454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD454 5892 bytes
SHA-256: 0bc9eaae8b5f7e86de5f47933bd68763bf080c2a5886c31fef088b957cb6fc0a
font_01_sfnt_off0000e856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE856 9936 bytes
SHA-256: fc137444c13f534a5723fc8392dba8042de822ae03c0dda099414b22f33c34f7