Malicious PDF — malware analysis report

Static analysis result for SHA-256 304ff3943b7b46b8…

MALICIOUS

PDF

73.1 KB Created: 2021-02-25 20:56:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 24b4904bec7976563f758c6b9d233c2c SHA-1: 06cb3aa1418194772435ff60b790156e16e78006 SHA-256: 304ff3943b7b46b8f2028204ab7e860e0bcf9148c2777241056c675573da21e8
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://jacksth.ru/award?keyword=chemistry+balancing+equations+ws+1+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4474206/normal_600f0d82e461e.pdfIn PDF document text
    • https://cdn.sqhk.co/tivanosox/gfGWozQ/business_plan_outline_sample_restaurant.pdfIn PDF document text
    • https://cdn.sqhk.co/gotoruzud/eygdRgc/play_online_fireboy_and_watergirl_forest_temple.pdfIn PDF document text
    • https://cdn.sqhk.co/wadupaxi/dfuCMid/carpenter_axe_champ_wood_cutter_games.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476418/normal_5fdd9ba53cbdd.pdfIn PDF document text
    • http://veruvipavopa.getenjoyment.net/94149097364.pdfIn PDF document text
    • https://cdn.sqhk.co/zibomevuguli/gjgd6ic/dragon_fish_goby_lifespan.pdfIn PDF document text
    • https://cdn.sqhk.co/mopomotop/eGYhaMw/worupedo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482218/normal_5feb4b8c1c9e9.pdfIn PDF document text
    • http://kigapoxifaxixem.22web.org/salesforce_administrator_resume_template.pdfIn PDF document text
    • https://cdn.sqhk.co/kawaniroti/hjjdKRa/vampire_and_werewolf_movies_2000s.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bikaxubu.rf.gd/17075361754.pdfIn PDF document text
    • http://xediguvodolej.epizy.com/boviwotatatitozurokipaget.pdfIn PDF document text
    • http://povasapodojika.epizy.com/vanilla_leatherworking_guide_alliance.pdfIn PDF document text
    • http://nukilaba.myartsonline.com/how_to_adjust_bipap_settings.pdfIn PDF document text
    • http://sajokibor.epizy.com/13295891283.pdfIn PDF document text
    • http://fuxalobel.rf.gd/wudebirabafoto.pdfIn PDF document text
    • http://momibud.epizy.com/bazojanigemiwu.pdfIn PDF document text
    • http://vimadetuvawese.rf.gd/xajufanunude.pdfIn PDF document text
    • http://govujetimavex.epizy.com/danilirekikapikodibolupog.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_off0000e1aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1AA 5632 bytes
SHA-256: c43a63e41d77aa28fc4f8dcf8cd86a786a5857eae8dfcf85c8445cbd15ef8d8b
font_01_sfnt_off0000f4bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4BB 9980 bytes
SHA-256: 1da641140f6a8117cbaf1a534115b2cff0afafb27fc63c59fd84ba78d1e022bc