Malicious PDF — malware analysis report

Static analysis result for SHA-256 da8b864a1a313c42…

MALICIOUS

PDF

67.8 KB Created: 2021-03-02 10:42:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e92629b6fd892d029ea9dcaf6836321d SHA-1: 582aa201f1923a955393ece1d7ff4108d85cdce8 SHA-256: da8b864a1a313c42dc78a2c600da8259d2722d6b06e336fcb200aaea1ad7e05f
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://lozipotod.ru/award?keyword=best+international+business+major+schools PDF link annotation
    • https://befugusugub.weebly.com/uploads/1/3/2/6/132683140/750e5366c63a206.pdfIn PDF document text
    • https://cdn.sqhk.co/ratosakip/igcigJ2/planboard_free_lesson_planner_for_teachers.pdfIn PDF document text
    • https://cdn.sqhk.co/nagigureti/gcgdih6/93241669324.pdfIn PDF document text
    • https://cdn.sqhk.co/siwuvulutip/Mxfhjhc/pockets_billiards_and_brew_san_diego.pdfIn PDF document text
    • https://cdn.sqhk.co/tebefaravuz/Bgchcgd/ailment_space_pixel_dungeon.pdfIn PDF document text
    • https://cdn.sqhk.co/livefivepa/ijcsiha/g-_stomper_studio_apk_free_download.pdfIn PDF document text
    • http://funusiwevig.22web.org/manager_accounting_software_guide.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/23855119927.pdfIn PDF document text
    • https://kilosite.weebly.com/uploads/1/3/0/7/130739696/tajawefal_sebukevogav_ralerika_perus.pdfIn PDF document text
    • http://gubixazolela.sportsontheweb.net/52892455742.pdfIn PDF document text
    • https://cdn.sqhk.co/godereliku/fhggho9/14858656284.pdfIn PDF document text
    • https://gedibaforajipet.weebly.com/uploads/1/3/0/8/130874683/kekeruj-rogaxufikeralam-zojovale-pipemep.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kovawasokagi.epizy.com/equity_market_capitalization_balance_sheet.pdfIn PDF document text
    • http://xenemusexo.epizy.com/formal_email_template_business.pdfIn PDF document text
    • http://pusebirenox.myartsonline.com/karazujuserunifivun.pdfIn PDF document text
    • http://tegiledo.epizy.com/appvalley_iphone_x.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_off0000cf83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF83 5304 bytes
SHA-256: 890fe2fec051c9923122b3591326055fa172e6aca35bfd97dc1ac60a48500210
font_01_sfnt_off0000e165.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE165 9552 bytes
SHA-256: 70a055b42a9f55ed7655f03420f739cba034a66cd89db2fdc772d053ff387a94