Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7126d08d213b805…

MALICIOUS

PDF

70.6 KB Created: 2021-02-23 17:56:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9e74936cc0b1e2c93f9be7dd16816cf7 SHA-1: 4978bbeec68ab590d5d39635b599fd6d00a51b5c SHA-256: f7126d08d213b8058ab669a58da24a9d9eb3538cd5735864df2058996687118d
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://baarspo.ru/wix?keyword=cdl+study+guide+alabama PDF link annotation
    • https://fuliwerupemivu.weebly.com/uploads/1/3/5/9/135983247/7665288.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428334/normal_5fdbb35c21296.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456116/normal_5feba413b6edf.pdfIn PDF document text
    • https://zukodefikarux.weebly.com/uploads/1/3/4/4/134498552/58fe9ab3081f493.pdfIn PDF document text
    • https://lajutiruwogow.weebly.com/uploads/1/3/4/5/134585316/f2db540915cd.pdfIn PDF document text
    • http://chebsvet.ru/jerry_kuhnhausen_mauser8cfvw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426957/normal_5fd6aa65506e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422884/normal_601f1b4fc8f22.pdfIn PDF document text
    • https://fumasidabufip.weebly.com/uploads/1/3/0/7/130775820/6255825.pdfIn PDF document text
    • https://xutonipojoneri.weebly.com/uploads/1/3/4/6/134667901/xemakekajegeb_wasawewe_semavodo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481990/normal_5fc83eb3d3c04.pdfIn PDF document text
    • https://bikonate.weebly.com/uploads/1/3/4/7/134715396/sadijatupu_duxewu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lovomijelun/guidelines_stroke_prevention_aha.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/jefon.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAE2 4980 bytes
SHA-256: 915316f70b22ddad408340332fd046aedb4f46600b0cfabe6e127496c1aebcf3
font_01_sfnt_off0000dbe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE3 10484 bytes
SHA-256: 948e3ee9ca5212cae679a06ea2130285b7d9c73bd3e9649991bf34f7cce3d084
font_02_sfnt_off0000ffab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFAB 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3