Malicious PDF — malware analysis report

Static analysis result for SHA-256 e411978d091e1e8e…

MALICIOUS

PDF

76.8 KB Created: 2021-02-09 20:44:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e4f90ccba6960fb7e9a2b4e7030079ea SHA-1: 6d04681076d03c72caa48a8d6ff537675d9eed67 SHA-256: e411978d091e1e8ea67ad4cc4f22f925a04cc6c5252375d4cb5368fd34c5e78d
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a high number of embedded links pointing to various domains, many of which are hosted on disposable or link-farm-like services. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and numerous external links suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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/123?utm_term=skullcandy+ink%2527d+wireless+mj+6699+manual PDF link annotation
    • https://zekenegelu.weebly.com/uploads/1/3/4/3/134390475/f0e969b916422a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457330/normal_5fd1bd08be738.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446399/normal_5ff7682ad715b.pdfIn PDF document text
    • http://ourfutures.space/nafawabevekerinef475u.pdfIn PDF document text
    • https://gogukosujupubof.weebly.com/uploads/1/3/5/3/135317205/8277736.pdfIn PDF document text
    • https://xobagosuwetir.weebly.com/uploads/1/3/2/6/132680986/2042611.pdfIn PDF document text
    • http://idealica-italiaofficial.site/tap_titans_2_artifacts_max_levelazvsd.pdfIn PDF document text
    • https://veraxoli.weebly.com/uploads/1/3/4/0/134040716/rowetisexa-mejajotisog-xedededodog.pdfIn PDF document text
    • http://kilewigi.iblogger.org/14325701253.pdfIn PDF document text
    • http://whitetwo.space/crazy_games_zombs_royalee5tev.pdfIn PDF document text
    • https://cdn.sqhk.co/wupofolizaj/XjbgcGW/59919978790.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369797/normal_5fc7a74d61a00.pdfIn PDF document text
    • http://winsbig.space/xoveridedaxiduvijetuzujone3f.pdfIn PDF document text
    • https://cdn.sqhk.co/fefamuve/biggjij/18814864889.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nuxumejaxumem.epizy.com/kaala_patthar_film_song.pdfIn PDF document text
    • https://s3.amazonaws.com/laginekux/bapidutetogak.pdfIn PDF document text
    • http://vudazirukileri.epizy.com/37214366344.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/baixar_jogos_xbox_360_formato_iso.pdfIn PDF document text
    • http://werekixaw.epizy.com/bed_wars_mod_apk_1._5._10.pdfIn PDF document text
    • http://davagutuvis.rf.gd/31290065305.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/77567614946.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/orangutan_baby_images.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_off0000ee3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE3A 5868 bytes
SHA-256: b293b4902f964ad1dbe38984da7bcc0321ebd63dac48dea593a89fcb4332d71d
font_01_sfnt_off0001023f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1023F 10192 bytes
SHA-256: 781787f8ee9cce9529ea14262ab424d15f95203b641a5fe8f65fbd7be5ae144f

Open this report in the interactive analyzer, or submit your own file for analysis.