Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee5c6e9cb1d5c51e…

MALICIOUS

PDF

68.9 KB Created: 2021-03-09 04:19:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 84c457fa50ea9d9422cc81c193d150b9 SHA-1: 6da5fd5bfa694f5e18ec52f55c21c70415de06b0 SHA-256: ee5c6e9cb1d5c51e401d197c22ca6ac8ad51a3e634f1a063feb5703db9cb5d17
126 Risk Score

Malware Insights

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

The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous external URIs, many hosted on disposable domains, suggesting a link farm or phishing lure. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically points to this behavior, aiming to trick users into downloading content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://golowaki.ru/award?keyword=differential+calculus+book+by+shanti+narayan+pdf+free+download PDF link annotation
    • https://siduwibe.weebly.com/uploads/1/3/4/7/134775996/01eb9c5f9d0.pdfIn PDF document text
    • http://sy0n.icu/freckle_juice_read_aloud_chapter_5dw8w9.pdfIn PDF document text
    • http://sehq.xyz/business_analytics_graduate_programs_texasbt6l8.pdfIn PDF document text
    • http://torchqbfl.fun/4419506971ej65t.pdfIn PDF document text
    • http://stnold.com/digejufalisinoniximislmk10.pdfIn PDF document text
    • https://cdn.sqhk.co/rojozedofaf/haiijcJ/96881112172.pdfIn PDF document text
    • http://lisolu.org/how_to_fix_physxloader.dll_file_missing_errorju457.pdfIn PDF document text
    • http://astrohelp.space/rpg_games_for_pc_frees1bsu.pdfIn PDF document text
    • http://excschool.ru/33573429033k0igv.pdfIn PDF document text
    • https://cdn.sqhk.co/xibumediw/KhhaBc6/class_10_maths_solutions_chapter_11.pdfIn PDF document text
    • https://cdn.sqhk.co/bulixanejad/Fgerjd1/smurfs_village_game_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/rifebonapesi/hjiigTz/star_galaxian_ultimate_edition.pdfIn PDF document text
    • http://tranquils.space/tennis_clash_mod_apk_1.5.0wm300.pdfIn PDF document text
    • http://lozhobelir.space/behringer_x32_producer_softwarerjedm.pdfIn PDF document text
    • https://ginuwedisifixel.weebly.com/uploads/1/3/4/7/134744372/liluzukape_padakagupuz_konozusanulidom.pdfIn PDF document text
    • http://bellissimo.online/dewalt_titanium_drill_bit_set_10-piece_impact_ready_dd5160ile9q.pdfIn PDF document text
    • https://nugilura.weebly.com/uploads/1/3/5/3/135317706/21742755a.pdfIn PDF document text
    • https://cdn.sqhk.co/sejujona/hdjfeKJ/puniziraxuvimuvupo.pdfIn PDF document text
    • http://cosmostil.top/xepufobll41l.pdfIn PDF document text
    • https://zulemogosisuwo.weebly.com/uploads/1/3/4/6/134689329/lovobutisi_vajosugiperilok_sumepajix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dexivovadoxexo.myartsonline.com/cv_assistant_administratif_et_financier.pdfIn PDF document text
    • http://dilutibu.onlinewebshop.net/how_to_make_tissue_paper_from_paper.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_off0000d07c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD07C 5640 bytes
SHA-256: 7addfd7803bd16b3dca259269f3310d0b28f3f73a3011c83f274b3f1a1b0e78c
font_01_sfnt_off0000e3bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3BD 9796 bytes
SHA-256: 52795dc3ac158467f1f1f2ee021fbfc9d5e0bd98da5b84a7ca7e61e065840978

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