Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4d9134850aa555e…

MALICIOUS

PDF

75.5 KB Created: 2021-02-21 01:11:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c6f2673dfd820f46c9d395549e7779a0 SHA-1: 7a1c360477f96848e7df1ea8c2af4323864fda96 SHA-256: a4d9134850aa555e5e3c37ea967d53dde0e594f4f2358ec61e782a6b1b00ad8a
126 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
  • 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=coleman+power+steel+swim+vista+pump+instructions PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4496170/normal_5ff69b37dd23f.pdfIn PDF document text
    • https://dejurepezuneron.weebly.com/uploads/1/3/1/4/131452785/732c22.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473322/normal_601aaa49489cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423714/normal_602fa0d74ebbd.pdfIn PDF document text
    • https://jozisanolotodix.weebly.com/uploads/1/3/0/9/130969335/030ebf24a297f.pdfIn PDF document text
    • http://cuzinfo.ru/adobe_photoshop_cs2_update_free_downloadkf9az.pdfIn PDF document text
    • https://dobidikomopal.weebly.com/uploads/1/3/5/3/135302797/5670826.pdfIn PDF document text
    • http://zamuxodub.22web.org/meaning_of_business_risk.pdfIn PDF document text
    • http://knitfqph.site/libros_astrologia_vedicavfz9j.pdfIn PDF document text
    • http://supportcopyright.net/8208067645sea5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383128/normal_601bcaef59f77.pdfIn PDF document text
    • http://bazis-rostov.com/sujet_bts_cg_2017d8vix.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452157/normal_5ffbdf9222eb9.pdfIn PDF document text
    • http://fruct.space/48857258869fyj96.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xitajorowemep.epizy.com/54968941557.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_off0000e89d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE89D 5136 bytes
SHA-256: 15584bffd06b2cca23775ba1811fc7855333a47d43b26bac6edcbd1ec431e9ca
font_01_sfnt_off0000fa0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA0C 11468 bytes
SHA-256: 21b380b8feb83af07912d2aff36a8e554d8e87b26e64737b367f89f9d9cf4f01