Malicious PDF — malware analysis report

Static analysis result for SHA-256 a80dbb65418a741f…

MALICIOUS

PDF

73.7 KB Created: 2021-02-23 20:00:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: ae65309fd63117a8c5e5c9ef88624aa2 SHA-1: 626a98c0186779a63983705b23e9f244eacfb908 SHA-256: a80dbb65418a741fb4b905696a83a3f970d9134ffd4f2bb91e3868e564f7d5b7
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=how%20to%20make%20compressed%20earth%20block%20machine PDF link annotation
    • https://bibuzutevokad.weebly.com/uploads/1/3/4/6/134634257/8346b04795a.pdfIn PDF document text
    • https://jinoranimewaxop.weebly.com/uploads/1/3/4/5/134528513/pewatep-wojupusetov-sovudegum.pdfIn PDF document text
    • https://pijaxulejogelub.weebly.com/uploads/1/3/0/8/130874219/68fd1d0d.pdfIn PDF document text
    • https://zolujalu.weebly.com/uploads/1/3/1/8/131856956/7737682.pdfIn PDF document text
    • https://cdn.sqhk.co/xogovofofi/h6hi8jh/przebieg_wojny_polsko_bolszewickiej_krotko.pdfIn PDF document text
    • https://vobanugan.weebly.com/uploads/1/3/5/3/135340106/zotoxikete.pdfIn PDF document text
    • https://fefolidagemilo.weebly.com/uploads/1/3/1/4/131453124/2918146.pdfIn PDF document text
    • https://cdn.sqhk.co/sewadokoka/haignhe/icebreaker_boat_simulator_parking_games_2017.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxozowaki/XerLiO4/35606906924.pdfIn PDF document text
    • https://vejotawugupexo.weebly.com/uploads/1/3/4/7/134756202/523047.pdfIn PDF document text
    • https://cdn.sqhk.co/gikazijegut/cToCoZ4/50011374884.pdfIn PDF document text
    • http://jigunemav.22web.org/grocery_list_template_pinterest.pdfIn PDF document text
    • https://sixikubirosepup.weebly.com/uploads/1/3/3/9/133997641/717f42c6e920.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nowutakifotekes.epizy.com/fepamuzuv.pdfIn PDF document text
    • http://memajale.epizy.com/32331901566.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_off0000de76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE76 5572 bytes
SHA-256: fd6d49863f39bfafad9af50bf80e9fa253fdcb8ca2c98145eeacf9a4a1e53ce7
font_01_sfnt_off0000f13c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF13C 11320 bytes
SHA-256: 7691cf314897b37384862a765201342c502f62cfb0c4bbc3a8b29f23ca2d23ed