Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7f75e958c95bfe1…

MALICIOUS

PDF

73.1 KB Created: 2021-02-27 10:34:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a1e36c323473dd3e4cae3fa04c9a493d SHA-1: c0a037729674b4c65f59a40339e5d1fcb3d30a57 SHA-256: d7f75e958c95bfe1948ffc9449f2dd5b731e7e7759584e9fb990fdbe559b338f
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://baarspo.ru/award?keyword=how+to+learn+tables+in+vedic+maths PDF link annotation
    • https://cdn.sqhk.co/suwitaguf/ujbhjjf/kebemofi.pdfIn PDF document text
    • http://coloradocustomelectric.com/states_and_capitals_game_sheppard_software568fy.pdfIn PDF document text
    • https://cdn.sqhk.co/gafisasiwu/brhFheY/blood_and_glory_immortals_ios.pdfIn PDF document text
    • http://zekaxezixil.medianewsonline.com/sas_sgplot_bar_chart_color.pdfIn PDF document text
    • http://grampus-shop.com/951030909wkxol.pdfIn PDF document text
    • http://vivoxasoro.22web.org/funny_animal_gifs_free.pdfIn PDF document text
    • https://cdn.sqhk.co/xajevedu/ciqhcjs/zabojakekifukifomugobop.pdfIn PDF document text
    • http://espaceabone.com/what_are_essential_linux_commandsur6kb.pdfIn PDF document text
    • https://cdn.sqhk.co/xaselavub/djgjafC/jizexuraben.pdfIn PDF document text
    • http://getsol.xyz/bazigefe0rl1u.pdfIn PDF document text
    • http://spindlndou.space/16765995119qvwes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489409/normal_601c872614d49.pdfIn PDF document text
    • https://gukikaxut.weebly.com/uploads/1/3/0/7/130775725/raforapewagujibu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tugedes.epizy.com/dyadic_wavelet_transform_tutorial.pdfIn PDF document text
    • http://vogojitipam.epizy.com/roxuzejimawufup.pdfIn PDF document text
    • http://xomesozumifa.rf.gd/nature_of_vocational_guidance.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_off0000e3e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E2 5432 bytes
SHA-256: ce9cbd86e1a7fa42214b61d08a6f531af91fcf18de8bfdd21ea2806ccb9814e1
font_01_sfnt_off0000f63d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF63D 9588 bytes
SHA-256: 2e044aa1d1f2b3f8d963d40f247bc80ed5186b201b0998dd3d13c250a1d8b4cf