Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c12a2d85284e033…

MALICIOUS

PDF

76.2 KB Created: 2021-04-24 00:42:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f8bc6444cc9dc1c9edb0f03eb277925 SHA-1: c36744506d85aaba27914a9f699402b5bed4039e SHA-256: 7c12a2d85284e033031f8ca97b3af4299af72b9eaf294ee67011b373f94bcb53
154 Risk Score

Malware Insights

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

The PDF contains a link disguised as a civil rights complaint inquiry, which is a common social engineering tactic to trick users into clicking malicious URLs. The embedded URL points to a known malicious redirector infrastructure, and the ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded malicious link suggest it's designed to lead users to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://yafferge.ru/strik?utm_term=how+do+i+file+a+civil+rights+complaint
    • http://wigigokewadusad.iblogger.org/vivaldi_font_bold.pdf
    • http://marketitaly.pro/power_air_fryer_oven_elite_instructionsnq4mc.pdf
    • http://babysampler.com/how_to_set_up_powerline_12002hl2i.pdf
    • http://bioforce-co.site/saffire_pro_24_dsp_reviewptw4a.pdf
    • http://uorott.com/tonupufabejawbog7.pdf
    • http://tuguxanofa.iblogger.org/37840775473.pdf
    • http://eurozone.pro/google_chrome_free_for_window_10c46k8.pdf
    • http://biomanix.best/edenpure_gen3_heater_reviewsk3frv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/bdb8425a-adaf-4a7e-9728-53f879111056/tipos_de_sistemas_operativos_de_la_computadora_y_sus_caracteristicas.pdf
    • https://s3.amazonaws.com/zozuxukoxo/sel_accelerator_software_free.pdf
    • https://s3.amazonaws.com/getizar/zezubipoxisaj.pdf
    • http://lobuxujan.epizy.com/refutifejigakoxavip.pdf
    • http://zagopemolal.rf.gd/fivifegalasade.pdf
    • https://uploads.strikinglycdn.com/files/93c04d22-ae65-4739-896c-defab0a1c25b/garmin_220_watch_band.pdf
    • https://s3.amazonaws.com/vigevot/flipkart_guess_what_answers_21_october_2019.pdf
    • https://s3.amazonaws.com/xujitezu/gikefokametilureputexij.pdf
    • https://s3.amazonaws.com/fukezavazuj/fujifilm_finepix_s8630_specs.pdf
    • https://uploads.strikinglycdn.com/files/001bce42-3cac-4d50-9331-3ac905181d2f/mi_planta_de_naranja_lima_en_ingles.pdf
    • https://uploads.strikinglycdn.com/files/6f38c5c2-5389-41b3-a404-f59e7f20f1eb/cybex_arc_trainer_630a_manual.pdf
    • https://s3.amazonaws.com/tugumeb/91219258529.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea79.bin
ccccadc2348fca435438462c6bf6fb84a2e0207106a7991751db09996372370d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA79 5680 bytes
font_01_sfnt_off0000fdbc.bin
e3788ebea4981f176d47cd2b1bfd44419db6368b3aaf1f1c48816fa1bb329850		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDBC 11140 bytes

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