Malicious PDF — malware analysis report

Static analysis result for SHA-256 18db65cf7435bfbd…

MALICIOUS

PDF

70.1 KB Created: 2021-02-19 11:30:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 7154f846532a8818a24c7b23caf54f16 SHA-1: 3536c120f543bbc238d55b39ee9d399262ce591e SHA-256: 18db65cf7435bfbde81c1f31478ae283ca021d6d379ffe54c24a334bb79690fc
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://seumenha.ru/wix?keyword=fundamentals+of+business+management+pdf PDF link annotation
    • https://cdn.sqhk.co/puvegipuros/chagEje/92856103959.pdfIn PDF document text
    • https://cdn.sqhk.co/vemudumuxixu/d0jehQD/tedidudewujivujepab.pdfIn PDF document text
    • https://jexiliwole.weebly.com/uploads/1/3/0/7/130739190/laduwuvepuxiguk-situkezu-manuru.pdfIn PDF document text
    • http://ximasoj.22web.org/air_datepicker_format.pdfIn PDF document text
    • https://vawosikajoj.weebly.com/uploads/1/3/1/4/131438279/3470871.pdfIn PDF document text
    • http://kutufirix.iblogger.org/airline_manager_2_easter_egg_android.pdfIn PDF document text
    • https://cdn.sqhk.co/bidubuwawi/2hdieVC/28920487596.pdfIn PDF document text
    • https://cdn.sqhk.co/foropogajag/hEjdgd1/lokipezewavevudixeziki.pdfIn PDF document text
    • https://kosodakugup.weebly.com/uploads/1/3/4/6/134655388/raxazawil-detadajawadi.pdfIn PDF document text
    • https://cdn.sqhk.co/wisulekekij/fwGgdOG/knives_out_review_ebert.pdfIn PDF document text
    • https://zesidorav.weebly.com/uploads/1/3/1/4/131437831/vozajelusuxil.pdfIn PDF document text
    • https://cdn.sqhk.co/mivijigonof/rtYsjaW/wetorataniwubeboxijibe.pdfIn PDF document text
    • https://cdn.sqhk.co/betewulo/iigiGja/94537063180.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://voxotili.epizy.com/sapuwibojovamiterod.pdfIn PDF document text
    • http://tosopipates.epizy.com/asmaul_husna_dan_artinya_lengkap.pdfIn PDF document text
    • http://sidakofonol.epizy.com/meaning_of_balance_sheet.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_off0000d79d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD79D 5360 bytes
SHA-256: 080fd3065f80f0306b02cef77ee702b77811c36bc86a6072e21e40d020282542
font_01_sfnt_off0000e9ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9CA 9880 bytes
SHA-256: 677251ffd8166c8469d0b278885b58a7047f4513fdacfe2e87cba43fef274cbf