Malicious PDF — malware analysis report

Static analysis result for SHA-256 24313867fa4b6202…

MALICIOUS

PDF

67.8 KB Created: 2021-02-19 13:40:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1277e369fb8c2c4382cfee1b982f5e3b SHA-1: c60820c11223e697bb94deafb5c65950545e35e8 SHA-256: 24313867fa4b62026c8db950d4a4ff54577817999de0a11578940d80fac148cd
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/123?utm_term=how+do+i+set+my+computer+to+obtain+an+ip+address+automatically+windows+10 In PDF document text
    • http://fit-italy.space/survivalcraft_vs_block_story_vs_minecraftbdz6p.pdfIn PDF document text
    • http://instacopyrighthelpteam.com/21912567542lfxl3.pdfIn PDF document text
    • http://luminar4-download.xyz/hollow_knight_the_huntergydzj.pdfIn PDF document text
    • http://ionatr.fun/835323288567lx0y.pdfIn PDF document text
    • http://sodaapp.pro/popcorn_flute_sheet_musicfau03.pdfIn PDF document text
    • https://cdn.sqhk.co/gikazijegut/TLgiwNp/blooms_and_berries_corn_maze.pdfIn PDF document text
    • https://vulodimov.weebly.com/uploads/1/3/4/8/134880101/larorevat.pdfIn PDF document text
    • http://getveran.site/sadlier_vocabulary_workshop_level_b5hlwl.pdfIn PDF document text
    • http://rm-swis-mine.com/kolasajusaguwod2iv3.pdfIn PDF document text
    • http://uuuuull.space/21188633091gprwl.pdfIn PDF document text
    • https://lataladegizozav.weebly.com/uploads/1/3/4/6/134685495/bopif.pdfIn PDF document text
    • http://nikaold.site/35150971687f92mb.pdfIn PDF document text
    • http://citimart.online/papotidosarekidomusozuobv.pdfIn PDF document text
    • https://nopewiviguzine.weebly.com/uploads/1/3/1/1/131164125/zenonefega_wunexibixaz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ditajizuru.rf.gd/fofumomugemoragu.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_off0000ca3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA3D 5708 bytes
SHA-256: 67794aed1e443bb7a3650652ea9774d21100c61f12e1324d46704e4e5302b059
font_01_sfnt_off0000dda4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDA4 10568 bytes
SHA-256: d06d730949bc51ee6af2c8081ac1b2bf89e69ae5e1b2fe5afb4d326156c238e2