Malicious PDF — malware analysis report

Static analysis result for SHA-256 c62a373163b290ab…

MALICIOUS

PDF

63.9 KB Created: 2021-02-17 09:31:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 233efbf3b1f1b2736179bbfba7e403ab SHA-1: 72ff55cc48241c91995c1a241665b5d53464dfc9 SHA-256: c62a373163b290abc6d3e4c97c49366ab80b9ea58c469f498fc18238b48be5fd
186 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
  • 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.
  • 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://druttle.ru/wix?keyword=astor+piazzolla+oblivion+piano PDF link annotation
    • https://cdn.sqhk.co/wogokodu/FAiejaa/wobikemitezuserikilat.pdfIn PDF document text
    • https://warororob.weebly.com/uploads/1/3/5/3/135314520/1fc28f5.pdfIn PDF document text
    • https://cdn.sqhk.co/sepunaro/jiF5if4/4112027602.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490366/normal_5fdda681cbebb.pdfIn PDF document text
    • https://noxerurivago.weebly.com/uploads/1/3/4/7/134767941/bbd31f.pdfIn PDF document text
    • https://cdn.sqhk.co/razonavari/jcictjd/jikib.pdfIn PDF document text
    • https://vogowabiruzo.weebly.com/uploads/1/3/2/6/132681596/9604921.pdfIn PDF document text
    • https://cdn.sqhk.co/joxutedunik/ugedmKX/moto_xtreme_harrison_ohio.pdfIn PDF document text
    • https://buniburus.weebly.com/uploads/1/3/1/6/131637527/c68c20ce92e.pdfIn PDF document text
    • https://wokopapun.weebly.com/uploads/1/3/5/3/135388848/81459c9c79.pdfIn PDF document text
    • https://cdn.sqhk.co/modajili/hcji6gh/wheels_on_the_bus.pdfIn PDF document text
    • https://cdn.sqhk.co/feguzuvubut/WHjjpif/danujiru.pdfIn PDF document text
    • https://cdn.sqhk.co/zebenane/iWPHEOr/88074730334.pdfIn PDF document text
    • https://cdn.sqhk.co/vogoxaginoje/ggfOldw/61742352658.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/39764813615.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/miwaxuzilowagam.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_off0000bf04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF04 5052 bytes
SHA-256: 597612133cbe95d8978c2b0de0cc4010ff0e408d575fc44a2d81a3bbcbdfebb5
font_01_sfnt_off0000d04e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD04E 10072 bytes
SHA-256: c8fa19e8d9585ef18709585de4b8ce96bafc14a745e4872480ad696a4c268c61