Malicious PDF — malware analysis report

Static analysis result for SHA-256 583ef88426cf560a…

MALICIOUS

PDF

69.0 KB Created: 2021-01-25 08:29:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 501db9c90e9b5137c6ffa736c67c2451 SHA-1: aa451b4a09e4df8bf4deefbc763f395817dc36eb SHA-256: 583ef88426cf560a5fa41ee422f54fa50ae7e067ffdb1fbb7466acab689d69f0
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://leonvi.ru/wb?keyword=strikers%201945%20plus%20mod%20apk PDF link annotation
    • https://cdn.sqhk.co/bepotedaxus/hbgjjfB/escape_game_50_rooms_1_level_50_explanation.pdfIn PDF document text
    • https://bewebisiseten.weebly.com/uploads/1/3/0/8/130874130/dukawovujokifozosek.pdfIn PDF document text
    • https://taxufutusa.weebly.com/uploads/1/3/4/5/134514166/3957609.pdfIn PDF document text
    • http://graatorama.space/miro_app_pricingbazij.pdfIn PDF document text
    • https://bumopajuri.weebly.com/uploads/1/3/0/9/130969054/a8c09453bb486c9.pdfIn PDF document text
    • https://fikuvigobe.weebly.com/uploads/1/3/4/5/134582673/6932571.pdfIn PDF document text
    • https://rokubupudila.weebly.com/uploads/1/3/1/8/131856034/wewalefijipakeg_tozabitutorew.pdfIn PDF document text
    • https://xoriforibeb.weebly.com/uploads/1/3/1/0/131071072/bugipaxe_bamogi_kexum_tewiloloz.pdfIn PDF document text
    • https://xududegugi.weebly.com/uploads/1/3/1/6/131636960/5001658.pdfIn PDF document text
    • http://wrinklestiltskin.com/pandemic_unemployment_assistance_nj_extensiongnx5o.pdfIn PDF document text
    • https://cdn.sqhk.co/tuledapozato/bgedGlO/snapchat_streak_emojisi_degistirme.pdfIn PDF document text
    • https://zukolarosaku.weebly.com/uploads/1/3/4/6/134662459/bemefuso_fimipofaviwiji.pdfIn PDF document text
    • https://gunagabivap.weebly.com/uploads/1/3/4/8/134863042/32a9645070.pdfIn PDF document text
    • https://vagewojevibo.weebly.com/uploads/1/3/4/8/134873572/wipokewokaru.pdfIn PDF document text
    • https://cdn.sqhk.co/joxutedunik/hdCTcWh/wefidiseluxaduverof.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_off0000d01c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD01C 5692 bytes
SHA-256: 0cd489561fceacd3a26ed0bd7ba64bb13c60f1fe0bb55007800ac05490e74562
font_01_sfnt_off0000e372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE372 10536 bytes
SHA-256: 88690598a893ebd2c0751bf2f8e104f58d564a8566538e89d7696382e066aae6

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