Malicious PDF — malware analysis report

Static analysis result for SHA-256 4593c98a82eff68d…

MALICIOUS

PDF

72.6 KB Created: 2021-02-17 15:54:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 284a241b2779951f24466127764e39db SHA-1: 28dcb50a584020a37c687808558aac00dd1adc28 SHA-256: 4593c98a82eff68d0b2d65c94c2a372c8fe3486f601e6aaaf27ec4373ea06590
134 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://druttle.ru/wix?keyword=terrarium+tv+apk+9.9.9 PDF link annotation
    • http://twirlini.com/950993548040kzgf.pdfIn PDF document text
    • http://begemotiks.fun/lovenox_bridging_guidelines4dzp3.pdfIn PDF document text
    • https://cdn.sqhk.co/zofizitene/ehaghjf/212797679.pdfIn PDF document text
    • https://matexofetuboso.weebly.com/uploads/1/3/1/4/131453592/mazixosodakesijorufe.pdfIn PDF document text
    • https://vawilateg.weebly.com/uploads/1/3/4/6/134697686/raxowenumuju-ripekuzibi-kadufi.pdfIn PDF document text
    • https://jupojunidukeze.weebly.com/uploads/1/3/4/0/134012404/luwuzu.pdfIn PDF document text
    • https://cdn.sqhk.co/fovomesit/fgiGhic/ai_virtual_assistant_in_healthcare.pdfIn PDF document text
    • https://cdn.sqhk.co/pefapalotux/igZihjb/budolaxazugulujad.pdfIn PDF document text
    • http://todayit.pro/redimusukemokipigopitetiwwwxn9.pdfIn PDF document text
    • https://cdn.sqhk.co/mugapowejog/hjeVcib/black_dragon_shooting_rpg_hack.pdfIn PDF document text
    • http://recepty-dd.info/epson_event_manager_cannot_connect_to_scanner_windows_10nxj8r.pdfIn PDF document text
    • https://cdn.sqhk.co/wevexifimur/UaqZn1e/94935935637.pdfIn PDF document text
    • https://cdn.sqhk.co/gasariba/ujhdcie/busukesawepite.pdfIn PDF document text
    • https://cdn.sqhk.co/juwafuzivega/e7hzjht/retujumedobunojapega.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pitareri.rf.gd/my_life_after_death_erik_medhus.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/lobevokalujepofaxeloziri.pdfIn PDF document text
    • https://s3.amazonaws.com/wujixus/the_irrelevance_of_equilibrium_economics.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/kingdom_hearts_union_x_classic_kingdom_guide.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_off0000e089.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE089 5016 bytes
SHA-256: a2ef704ee8a7bb5b8e57b29e8fbaa00b38b6a26c06a62b2f07c6f018319526ea
font_01_sfnt_off0000f192.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF192 10592 bytes
SHA-256: e37a3d9f11d3a8d1807e57abe4069c06adc43f57c1587e0b1f52a6b7a2f00f03

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