Malicious PDF — malware analysis report

Static analysis result for SHA-256 52c7ea8b222c4e0e…

MALICIOUS

PDF

75.5 KB Created: 2021-03-23 01:40:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: ef21ad3078a9afd371aaa4136312027a SHA-1: b5bc439098c5d5d677ed78c343dbaee19f92c74a SHA-256: 52c7ea8b222c4e0e7989262f2d8de29d6b87ec238a39d15cb5ad6b7b6803d0bc
126 Risk Score

Malware Insights

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

The sample is a PDF document flagged by multiple heuristics, including ML and ClamAV, as malicious and likely phishing-related. It contains numerous external URIs, with one specifically targeting a 'subway catering menu pdf' keyword, suggesting a lure. The PDF structure and embedded links indicate an attempt to redirect users to potentially malicious websites for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://botokaw.ru/award?keyword=subway+catering+menu+pdf PDF link annotation
    • http://gerawat.22web.org/divina_commedia_testo.pdfIn PDF document text
    • https://cdn.sqhk.co/jusigexovoz/gPjdxhb/pezumulax.pdfIn PDF document text
    • https://cdn.sqhk.co/bogonelemid/w60ieyj/stay_alive_game_download_pc.pdfIn PDF document text
    • http://zekojotewakugag.mypressonline.com/lukobanopovi.pdfIn PDF document text
    • http://sdfsdfsdf.shaketorch.com/c_est_ce_sont_il_est_ils_sont_exercices.pdfIn PDF document text
    • http://woravesamoz.22web.org/69706646625.pdfIn PDF document text
    • https://cdn.sqhk.co/dudavizi/jfZicQ6/epic_seven_fodder_leveling_guide.pdfIn PDF document text
    • http://gamuxiwami.getenjoyment.net/94629973412.pdfIn PDF document text
    • https://cdn.sqhk.co/gibuburi/cid7Ed4/kinuzav.pdfIn PDF document text
    • https://cdn.sqhk.co/tavaxikanabu/3TMherh/movies_anywhere_roku.pdfIn PDF document text
    • https://cdn.sqhk.co/gobenebovi/hicCSjd/ardaas_movie_all_songs_djpunjab.pdfIn PDF document text
    • http://vobigivu.22web.org/shooting_stars_meme_audio.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dinixebun.epizy.com/79857501738.pdfIn PDF document text
    • http://numumodi.epizy.com/lelufadubafipajotigimuw.pdfIn PDF document text
    • http://xadamun.epizy.com/kabotijalen.pdfIn PDF document text
    • http://voputujewijozej.rf.gd/how_to_reset_voicemail_password_on_verizon_flip_phone.pdfIn PDF document text
    • http://dezinovuxan.rf.gd/lujososimokotuximuluwexe.pdfIn PDF document text
    • http://xividusu.epizy.com/azure_devops_manual.pdfIn PDF document text
    • http://nuguvumaxexuwus.rf.gd/jifurajekelejojexaxe.pdfIn PDF document text
    • http://nudibiwer.epizy.com/33382598928.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_off0000edca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCA 5700 bytes
SHA-256: cce5aa8d84504dbc6dd3a9b071e193c4ba722aaa5196cc4505e339a3a46f569c
font_01_sfnt_off00010139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10139 9384 bytes
SHA-256: c2f7165b1007e107465bb4a2f922222d2584d9a499294f354cb5ed5c8df9654c

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