Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f072b6dd1d0dbe0…

MALICIOUS

PDF

68.2 KB Created: 2021-02-16 11:55:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4b592f7e2e4fb02c7b935962953cc852 SHA-1: f917e7ec9a81490cd592ec843fd2476c150a4e85 SHA-256: 8f072b6dd1d0dbe0ceddf7bcdae31025ae4c508d4d70bdb2dc4111b2a18167c4
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/strik?utm_term=how+to+handle+conflict+resolution+in+the+workplace PDF link annotation
    • http://pezozolagipiv.22web.org/48421441961.pdfIn PDF document text
    • https://cdn.sqhk.co/fokatekox/iABiajh/fast_legacy_racing_mod_apk_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388282/normal_5fefc86d33fcb.pdfIn PDF document text
    • https://cdn.sqhk.co/telivagawu/LijyggN/juxatematukifurol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427273/normal_601964f0c43f4.pdfIn PDF document text
    • https://cdn.sqhk.co/jawubibegeba/ciejdgi/nobuwogovuragemig.pdfIn PDF document text
    • http://xaxikobovivo.22web.org/31370666928.pdfIn PDF document text
    • https://petirinupupa.weebly.com/uploads/1/3/1/4/131438611/1004798.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488572/normal_6028416e1274f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417306/normal_6016e02178088.pdfIn PDF document text
    • https://dopotalufiru.weebly.com/uploads/1/3/4/6/134601398/jufide-kugolimep-zozagekeb.pdfIn PDF document text
    • http://begdas.space/959500939108o524.pdfIn PDF document text
    • https://nuwomanat.weebly.com/uploads/1/3/4/6/134664603/disiviwaxilovawodo.pdfIn PDF document text
    • https://cdn.sqhk.co/nikazurokuv/jAFrspH/motuworumeribuwesiw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471484/normal_5ff8b277b71e1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000cebe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEBE 5360 bytes
SHA-256: 69cf6d566307540f3c71918ec854b24124f6ef5290909cb2c639d574079a6bcd
font_01_sfnt_off0000e105.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE105 10080 bytes
SHA-256: ec3e962910c250ef172c4760d675011d18795b8f15e45fa3a579983a2c3e14ba