Malicious PDF — malware analysis report

Static analysis result for SHA-256 014cd7e48ee73771…

MALICIOUS

PDF

71.9 KB Created: 2021-05-03 20:47:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: cfed130fad113189694cb0aefe88d438 SHA-1: ca940f5f63be6804a5c5842b0dd605c5333347f8 SHA-256: 014cd7e48ee7377129a8a1a03c10ce1f68a8ed4a47fb0f0867154341c87d7e57
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains, indicative of a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were directly extracted, the PDF structure and URL patterns are consistent with malicious document lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xezojetit.ru/strik?utm_term=govinda+namalu+telugu+lo+songs PDF link annotation
    • http://hihikane.space/netumavixezobemodel129r.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusetoteji/hgfiaje/clash_of_clans_world_championship_2020_prize_money.pdfIn PDF document text
    • http://vixabaj.scienceontheweb.net/coordinate_geometry_distance_formula_worksheet.pdfIn PDF document text
    • http://ig-socialmedia.xyz/tilavapaxoboi2n7f.pdfIn PDF document text
    • https://cdn.sqhk.co/talokelom/cZp11hh/gavukapegivovijekawava.pdfIn PDF document text
    • http://remontlegko.info/what_are_the_steps_of_the_closing_process_in_the_right_ordero2p0k.pdfIn PDF document text
    • http://kittyplay.online/tableau_10.5_product_key_freezeyu6.pdfIn PDF document text
    • https://cdn.sqhk.co/jotapepikota/jjbqWrM/mumonepapemoxanut.pdfIn PDF document text
    • http://onlyforyou.space/yo_amo_a_juan_querendon_capitulos_completose0h2n.pdfIn PDF document text
    • http://rivafigikiwax.medianewsonline.com/bali_tourist_map.pdfIn PDF document text
    • http://wisecredit.info/alphabet_francais_exercices7muvi.pdfIn PDF document text
    • http://lerimofo.mywebcommunity.org/technical_analysis_investopedia.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487431/normal_5fe556fd7cc57.pdfIn PDF document text
    • http://nickned.me/krups_il_primo_972a_manualtdvo4.pdfIn PDF document text
    • https://cdn.sqhk.co/zebenane/hdgcVFo/ragnarok_tactics_skill_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/jawutuwek/javggdV/download_superhero_war_robot_fight_city_action_rpg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485946/normal_60542d7fce561.pdfIn PDF document text
    • https://cdn.sqhk.co/miburixegapu/iiieWRz/space_images_free_wallpaper.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496586/normal_5ffda4a3d5033.pdfIn PDF document text
    • http://stixlife.info/season_6_grey_s_anatomy_episode_guidev93pt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dc3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC3E 5140 bytes
SHA-256: 6a8e58f211ea36362a7141d64d14af2af90a0f640f68c6e01a4a69c6b27e8e98
font_01_sfnt_off0000edb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB4 11152 bytes
SHA-256: 8fb3c6facaacb5a08ef7e50a8108e0ec4f37ccf9f461fde77a8515fc353ea5a1

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