Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eb1a15c2e9d3f83…

MALICIOUS

PDF

67.7 KB Created: 2021-02-09 20:02:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1df3255e1866202922bcb1f5dcc42795 SHA-1: e6327c114e9ccac2509320d14669a5a3e597a2fe SHA-256: 1eb1a15c2e9d3f83337a0e6b1436866509698ad4d9b089a99957ba96695bdd03
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://bologen.ru/wb?keyword=salut%20d PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4416664/normal_5fef1022c12cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488137/normal_601b35799ba2a.pdfIn PDF document text
    • https://cdn.sqhk.co/rekewuneboxu/jifgdge/buy_duck_rubber_ringtone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403413/normal_6015ccfca8f64.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446038/normal_5fedb9f5d8ef2.pdfIn PDF document text
    • https://sodikisug.weebly.com/uploads/1/3/1/4/131437766/bipumuj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494673/normal_5ff356eda157d.pdfIn PDF document text
    • https://tadomowiwelam.weebly.com/uploads/1/3/4/7/134744739/5ea3b51.pdfIn PDF document text
    • https://nuzewotamomumaf.weebly.com/uploads/1/3/4/7/134701518/472c8f21852.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420014/normal_5fda870a0da75.pdfIn PDF document text
    • https://raxagipob.weebly.com/uploads/1/3/4/8/134883443/tajikemuponamow-mavulitan-vunuzaf-waworo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367959/normal_6012367239ebb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367656/normal_600c74ad78c22.pdfIn PDF document text
    • https://cdn.sqhk.co/rutunidosaw/3ig6ihd/dozadidujufe.pdfIn PDF document text
    • https://cdn.sqhk.co/nukuzulu/hbpXsgr/sibopiler.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408599/normal_5ff8517fe465a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sapirilogive.epizy.com/94789110925.pdfIn PDF document text
    • http://relisedozoru.epizy.com/fonopo.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_off0000c883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC883 5376 bytes
SHA-256: 8950669c349c5f34a81a7fa85822c20baecf4fc1206c0ba796abe4df5c0811d3
font_01_sfnt_off0000daad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAAD 11744 bytes
SHA-256: 6c78ab0d8afd32ccb82ed107432d95b23c5a23a9ccf961a2af1e5726d82321f6