Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3dd39262334af9d…

MALICIOUS

PDF

73.0 KB Created: 2021-02-24 11:41:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7a93b047121fe2630d7222ff5ec5341a SHA-1: bf3fa8206be105648e711c69426e0163701cc336 SHA-256: c3dd39262334af9d822704c51cb1d5036720b3cfdfa8b0ba349acb79ed34e13d
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://seumenha.ru/wix?keyword=all+handler+vpn+apk PDF link annotation
    • https://cdn.sqhk.co/tefazaturar/jjFhfqs/canvas_teacher_user_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/zozimevoket/Mijhahj/xatududul.pdfIn PDF document text
    • https://tezubowaxax.weebly.com/uploads/1/3/4/6/134640868/64bd516527774e1.pdfIn PDF document text
    • https://cdn.sqhk.co/ximirujusuxo/hj3jatl/mefuvunebon.pdfIn PDF document text
    • https://cdn.sqhk.co/potasuregoz/Oieghgi/safety_inspection_apps_for_android.pdfIn PDF document text
    • https://jinokafolamod.weebly.com/uploads/1/3/4/3/134310646/mofaw-dejoro.pdfIn PDF document text
    • https://cdn.sqhk.co/nivurerazusa/bjajbve/xunasanavakukimin.pdfIn PDF document text
    • https://cdn.sqhk.co/vujagefamig/tiigdmK/fipiwerarumapokuditafava.pdfIn PDF document text
    • https://cdn.sqhk.co/pesuxitum/cZAhche/skyrim_summon_dragon_priest_spell.pdfIn PDF document text
    • https://cdn.sqhk.co/molewekane/jgjhsLL/12383978917.pdfIn PDF document text
    • https://cdn.sqhk.co/vozeseseber/hzib4ib/applock_fingerprint_pro_apk_2019.pdfIn PDF document text
    • https://mogobuzuxoxede.weebly.com/uploads/1/3/0/7/130740257/be1d433.pdfIn PDF document text
    • https://rusokupos.weebly.com/uploads/1/3/4/4/134468665/zedanalazazol_sivimusekija_bowikudogolonir.pdfIn PDF document text
    • https://cdn.sqhk.co/numiwuzuwix/hcYphds/werirugipusafitugexudave.pdfIn PDF document text
    • https://cdn.sqhk.co/soxobiwefili/fUWrG4P/69977210841.pdfIn PDF document text
    • https://zipuwuxa.weebly.com/uploads/1/3/4/3/134376087/bagowusavit.pdfIn PDF document text
    • https://cdn.sqhk.co/jogekiluse/c0jgjeH/zuzijekopib.pdfIn PDF document text
    • https://cdn.sqhk.co/fafovewidom/ZAXhdjf/4039914596.pdfIn PDF document text
    • https://guxojifupu.weebly.com/uploads/1/3/1/4/131438233/f8ded817.pdfIn PDF document text
    • https://cdn.sqhk.co/mapetidul/zyC7Ejd/the_most_difficult_board_games.pdfIn PDF document text
    • https://cdn.sqhk.co/tibidatoxo/dgjphhY/aladdin_and_the_king_of_thieves_disney_wiki.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_off0000e235.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE235 4984 bytes
SHA-256: 64b44d59cf97829a4a167c5512d52e31720e47387b12c7ab37ff8f6c0bed6dff
font_01_sfnt_off0000f321.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF321 10412 bytes
SHA-256: 7f46daf5e6a1074e1be623bda5d41d5d3ef0165c77e9af4550d55dabdb52277a

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