Malicious PDF — malware analysis report

Static analysis result for SHA-256 3549b9f671915dee…

MALICIOUS

PDF

63.8 KB Created: 2021-03-02 06:56:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 8e2559545806619332283026e88d309d SHA-1: 7797ad46a0dd848e9f06080e0fd4141d38aa4b98 SHA-256: 3549b9f671915dee99f132d43c7b79deb0d6134b584a1c598745026cae5ebb81
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://gimoguvi.ru/wix?keyword=chrome+snake+unblocked PDF link annotation
    • https://cdn.sqhk.co/retagigimusa/ehcighL/flight_tracker_american_airlines.pdfIn PDF document text
    • https://xizovetezewo.weebly.com/uploads/1/3/2/8/132814166/4745148.pdfIn PDF document text
    • https://xoravali.weebly.com/uploads/1/3/0/7/130775395/xotemevenitineb.pdfIn PDF document text
    • http://kejoxemubogese.mywebcommunity.org/dear_mr_henshaw_book_study.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444356/normal_600b0b15422e1.pdfIn PDF document text
    • https://tivubolo.weebly.com/uploads/1/3/1/8/131857038/3267472.pdfIn PDF document text
    • http://bidizujimon.getenjoyment.net/xuwijagidofizafojiduko.pdfIn PDF document text
    • https://cdn.sqhk.co/xenumobavun/jJghib5/pencil_sketches_books_free_download.pdfIn PDF document text
    • http://jepenufi.getenjoyment.net/79081481198.pdfIn PDF document text
    • https://cdn.sqhk.co/wesaduleb/eMhhiT6/robotech_cyclone_run_board_game.pdfIn PDF document text
    • https://cdn.sqhk.co/kagaxavog/jfnidnL/minecraft_earth_mobs.pdfIn PDF document text
    • https://wakukaxowemaba.weebly.com/uploads/1/3/5/3/135303752/duwakufoto.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/lekizopiloref/zuxefo.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/film_a_frozen_flower_subtitle_indonesia.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/pekaxadaba.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/4502471775.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_off0000bf62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF62 5288 bytes
SHA-256: 75e089de8f1571391b9218e42f2305813c71c94208e2db7e368f898124d114e8
font_01_sfnt_off0000d123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD123 9796 bytes
SHA-256: 0338da00d806a376f5ff7385d76b680adf828db4b02f128d425bcbca766e3141