Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5d4fe89261d3436…

MALICIOUS

PDF

77.7 KB Created: 2021-02-26 05:01:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 726afd732f21b50ebb3868c832da1d23 SHA-1: f0d99e3d4740970d1cb5a707c80f00b9c4fac533 SHA-256: d5d4fe89261d3436774cfc87839ff92a92419ab36abb23693eef3bd2a88d66aa
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://bologen.ru/123?utm_term=fluke+1735+power+logger+battery PDF link annotation
    • https://cdn.sqhk.co/zarepowake/ijgcUji/islamic_wikipedia_malayalam.pdfIn PDF document text
    • http://vijevejumozugim.sportsontheweb.net/13105360182.pdfIn PDF document text
    • http://nesorus.mywebcommunity.org/81056106918.pdfIn PDF document text
    • http://shoop-fm.ru/pengertian_agama_hindu0cp4v.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449187/normal_60356af029e39.pdfIn PDF document text
    • https://cdn.sqhk.co/xenojepezere/f1ctugh/7540404841.pdfIn PDF document text
    • http://pefiworawodud.mypressonline.com/77273931093.pdfIn PDF document text
    • http://martakkord.ru/pibozewulisisexomenu19wqc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454973/normal_5fcb476e596b1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416332/normal_5fff3207150dc.pdfIn PDF document text
    • https://cdn.sqhk.co/mejabutumu/uqjbjip/zodonukexigixiludozuditun.pdfIn PDF document text
    • https://zuvitapud.weebly.com/uploads/1/3/1/4/131406427/7974cf64a0fbf.pdfIn PDF document text
    • http://fupemagis.mywebcommunity.org/69436233667.pdfIn PDF document text
    • http://xijulefabogi.getenjoyment.net/radio_thermostat_ct50_battery_replacement.pdfIn PDF document text
    • https://cdn.sqhk.co/vapezuwe/j1ojhij/35864447806.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_off0000efae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFAE 5580 bytes
SHA-256: 0a87dba34c852bc5ea163de8c1b356e89c77fac13e38346c18c1d18ad5844890
font_01_sfnt_off000102ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102ED 12032 bytes
SHA-256: 94839209915250eeb8f062fefd6bf0aab924e231d52e09551ce45ec64db50f7e