Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd4d8c6668a09efc…

MALICIOUS

PDF

73.5 KB Created: 2021-02-09 17:05:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0565d9045083e4b56d4701db6a9bcee1 SHA-1: 790e5d663542496a36475050245816e1a60df1c9 SHA-256: fd4d8c6668a09efcd40af10fd6001f839e5e40117599a4deb86294819f38c3b4
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/wb?keyword=knee%20injury%20treatment%20guidelines PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4374211/normal_6020fdedc1671.pdfIn PDF document text
    • https://cdn.sqhk.co/zoboxoba/fjjgehb/glitch_camera_download_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/detazido/dibfhc8/x-_wolf_testosterone_booster.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386618/normal_6005492a3eac4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378608/normal_5fd08bfe54b70.pdfIn PDF document text
    • https://wivikomale.weebly.com/uploads/1/3/2/7/132740486/wilupuvu_tedomisetet_gojoxejogij_tanipobudabufe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385850/normal_60032c416f371.pdfIn PDF document text
    • https://filinisosiwox.weebly.com/uploads/1/3/0/8/130814007/bimogefitata.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446174/normal_601bff247e0bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374371/normal_6018e838e292d.pdfIn PDF document text
    • https://cdn.sqhk.co/dovawowo/idCQhhb/mutizuxolituvuvume.pdfIn PDF document text
    • https://duzetokip.weebly.com/uploads/1/3/4/4/134404829/momavimomakale.pdfIn PDF document text
    • https://cdn.sqhk.co/kizusuvut/d6LgEH2/queen_s_racing_manager_1968.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dojidusajotat.epizy.com/acetaldehyde_reacts_with_naoh_to_form.pdfIn PDF document text
    • http://golagesobowe.epizy.com/chrome_android_plugins.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_off0000e30d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE30D 5292 bytes
SHA-256: 20b4d40f8e2d4cdba3d4ad3c06d9b1518068096e1190b19319c7adc3d6ed773c
font_01_sfnt_off0000f50b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF50B 10648 bytes
SHA-256: 683ab6ea85a0764e5e00cdef62732c8b966194741952d0591d8b1142332262a8