Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1b479ac44bed45a…

MALICIOUS

PDF

68.2 KB Created: 2021-02-12 23:19:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d47a1eee44ed7ea219e3479d52bc4dd5 SHA-1: 5ab9d31af15a5690ed842ed77cdb18f9b30e0f03 SHA-256: d1b479ac44bed45a2aca8c738b8b6fb54c939d0b90662bd747047222edcad2b5
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/wb?keyword=bhola%20shankar%20bane%20madari%20video%20song PDF link annotation
    • https://zasuzepomuban.weebly.com/uploads/1/3/4/6/134627511/jonigelu-nomapaj-kudasifelo-tanab.pdfIn PDF document text
    • http://blancop.xyz/62185224970nea0.pdfIn PDF document text
    • https://cdn.sqhk.co/xokunafuse/ekQGn3W/small_living_room_decorating_ideas_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/xuvetuzaxi/ngeuCha/whisper_app_notification_sound_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xemugugafot/hiihQoL/79146327810.pdfIn PDF document text
    • https://cdn.sqhk.co/pimidima/e5Qvgc8/64994060494.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419640/normal_6022d7fb890c7.pdfIn PDF document text
    • https://cdn.sqhk.co/xevowuto/es6qEkv/us_political_news_today.pdfIn PDF document text
    • https://cdn.sqhk.co/xolanikipiz/hcH5cTO/6994091883.pdfIn PDF document text
    • https://verumoxozuvije.weebly.com/uploads/1/3/1/4/131407377/3abf9a89d513.pdfIn PDF document text
    • https://kepiloxuxamife.weebly.com/uploads/1/3/0/7/130740378/novofo.pdfIn PDF document text
    • http://mpvideo.org/muwemesukenmdxo8.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/mubemutolewe/at_t_u_verse_dvr.pdfIn PDF document text
    • https://s3.amazonaws.com/vufuzewasi/bijotupivilem.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/52394924481.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_off0000cde5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDE5 5552 bytes
SHA-256: 4c31b6fb3c39be158edbd2a7be03ac23ed270a6f0fd8212491f6c3bc810e29fe
font_01_sfnt_off0000e09f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE09F 10296 bytes
SHA-256: 1893e03e6678b90a19e98e9c017e998bacf96ad81e1d7373c3704c83750ba2ca