Malicious PDF — malware analysis report

Static analysis result for SHA-256 a32a17eca452b4e5…

MALICIOUS

PDF

75.4 KB Created: 2021-03-04 13:01:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 28876a3886a7be2c8599d4ebcfe1d62b SHA-1: ceb89a6f9c0bfcc6ce1bf941f1e11976f2421d83 SHA-256: a32a17eca452b4e521344b25153363032c5e1052a16bc41f8a340e84a87f89bd
134 Risk Score

Malware Insights

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

The PDF document contains a lure for downloading 'Fl studio 12' which is a common tactic for distributing malware. The presence of multiple external URIs, including one pointing to 'xezojetit.ru', and the ML classifier flagging it as malicious strongly indicate a phishing or malware distribution attempt. The ClamAV detection further confirms its malicious nature, classifying it as a 'Pdf.Phishing.Trojan'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://xezojetit.ru/123?utm_term=fl+studio+12+download+for+pc+windows+7+32+bit PDF link annotation
    • https://cdn.sqhk.co/vameduvide/Uvnitia/76241077293.pdfIn PDF document text
    • http://crispyset.online/wobukegipf5f2.pdfIn PDF document text
    • https://cdn.sqhk.co/pabelewexo/jdVRoid/how_to_draw_a_wolf_easy_youtube.pdfIn PDF document text
    • http://pycnidwzxc.info/acoustic_solutions_sp_150_manualykh76.pdfIn PDF document text
    • http://vevaxogejaz.scienceontheweb.net/best_on_acorn_tv_2020.pdfIn PDF document text
    • http://jedomagisuw.getenjoyment.net/what_does_a_guardian_ad_litem_do_for_a_child.pdfIn PDF document text
    • http://koolmaxt.online/1992_yamaha_timberwolf_250_top_speedjo6p9.pdfIn PDF document text
    • http://ralugugifoxatir.scienceontheweb.net/148303201.pdfIn PDF document text
    • http://zerkalo-fugicar.website/zombie_shooter_survive_the_undead_outbreak_hack_apkr2v1h.pdfIn PDF document text
    • http://jadogaxarabu.mygamesonline.org/lenovo_t430_display_drivers_for_windows_10_64_bit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jukezeluf/40870436812.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/93334187761.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/bovemeda.pdfIn PDF document text
    • http://kesupipipiret.onlinewebshop.net/analisis_sobre_la_pelicula_el_mundo_de_sofia.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_off0000e7c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C8 5764 bytes
SHA-256: c80176af0004ecfebd77e556391a5b2cbed6c1eeb2b0dc2b346dda830994201f
font_01_sfnt_off0000fb93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB93 10740 bytes
SHA-256: a8e299578489362c9a67e203e79385e7404c014bb699c9eb88154096ca3979fa

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