Malicious PDF — malware analysis report

Static analysis result for SHA-256 f806db2f12f8b4c5…

MALICIOUS

PDF

83.6 KB Created: 2021-03-10 22:30:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b1daa19c2142d4f2ee2238763a68968d SHA-1: 25f8d50be01783c0b4d7160b480ecadcc93446bc SHA-256: f806db2f12f8b4c5bbeb828153c0b1c33deb33815d23b77386187ab4a7307b94
196 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or malware distribution lure. It contains a large number of external links, many pointing to SEO-optimized PDF files, suggesting a link farm or redirector strategy. The primary external URI, 'https://kuzutuzo.ru/aws?utm_term=wolfgang+puck+pressure+oven+user+manual', is likely part of this scheme to direct users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://kuzutuzo.ru/aws?utm_term=wolfgang+puck+pressure+oven+user+manual PDF link annotation
    • https://cdn.sqhk.co/livatunozasu/oTsjheh/winning_wsop_free_texas_holdem_poker_online.pdfIn PDF document text
    • https://zesoxomilojul.weebly.com/uploads/1/3/4/0/134018604/wepojekutalaz_kopilizomege_jupemegema_pomuloxapeked.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382201/normal_603c77b9e098d.pdfIn PDF document text
    • https://cdn.sqhk.co/paxepilekot/jjjhhgW/color_splash_effect_application.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377115/normal_601877469e32e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401555/normal_6020fc95c43f7.pdfIn PDF document text
    • https://cdn.sqhk.co/wijelukifap/E5Ihf1N/air_horn_mlg_dank_meme_prank_buttons.pdfIn PDF document text
    • https://mimedotaxejibi.weebly.com/uploads/1/3/0/8/130873786/nisetu.pdfIn PDF document text
    • https://cdn.sqhk.co/zifeduwa/fgf57jf/friv_2019_love_tester_3.pdfIn PDF document text
    • https://cdn.sqhk.co/mitapupafono/hdib2ic/puppy_wallpaper_hd_zedge_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/tamejenonisi/gheiehf/vebidinowodenolebataka.pdfIn PDF document text
    • https://cdn.sqhk.co/kepilujofeje/jeghZlP/zazijixebabexudoj.pdfIn PDF document text
    • https://cdn.sqhk.co/sanobude/Zxjew5I/panic_alarm_home_security.pdfIn PDF document text
    • http://kakopase.iblogger.org/jupatiwowa.pdfIn PDF document text
    • https://cdn.sqhk.co/rugofufol/hgieibs/6417947704.pdfIn PDF document text
    • https://cdn.sqhk.co/fakobijo/PhegikB/cheats_for_mortal_kombat_x_xbox_one.pdfIn PDF document text
    • https://cdn.sqhk.co/wajerewuwer/RlrjgQY/nupepogarupipojivawivu.pdfIn PDF document text
    • https://cdn.sqhk.co/vefutifeves/Q6jiiiB/free_hd_movies_2020_watch_free_online_cinema.pdfIn PDF document text
    • https://cdn.sqhk.co/silijebutu/Lhhifib/galaxy_combat_space_shooter_alien_attack_premium_mod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://welolazudadiv.epizy.com/ryobi_backpack_leaf_blower_electric_start.pdfIn PDF document text
    • http://xosareregaka.epizy.com/my_talking_angela_apk_latest_version.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC6B 5228 bytes
SHA-256: 4d7f10765690d85b29804a2e64e1fca25854d6aed5975bf7fbd26c8ee2f2b0a0
font_01_sfnt_off00010e34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E34 10772 bytes
SHA-256: 96d95f9845c3df63ca1fdb414dd5feef1ae2ebb41aef2a6549c86f9cbcabd52d
font_02_sfnt_off000132ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132AD 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34