Malicious PDF — malware analysis report

Static analysis result for SHA-256 17ceccc38e8d6874…

MALICIOUS

PDF

72.8 KB Created: 2021-05-11 08:59:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 01b8f152ecbbab612b268dc6f0d656bf SHA-1: 1841143e9d8b876e79a58792002846db9b8e7665 SHA-256: 17ceccc38e8d6874a7b326977d8e26495f7e297ca351ea7755810a9f18cb68e8
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to a potential phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to product specifications.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://druttle.ru/strik?utm_term=boss+br+1600+specs PDF link annotation
    • http://riwotivadejud.sportsontheweb.net/gokiziv.pdfIn PDF document text
    • https://cdn.sqhk.co/vagewovupug/Ghdrjjh/nolofexumevokutenulelawid.pdfIn PDF document text
    • https://cdn.sqhk.co/wosipuvetot/bOIqwJC/japanese_swordsmanship_training.pdfIn PDF document text
    • https://cdn.sqhk.co/bivuwusim/ee8hgSO/23194603378.pdfIn PDF document text
    • http://rigovutamejebum.iblogger.org/53815252637.pdfIn PDF document text
    • http://midosiw.22web.org/asu_poly_parking_map.pdfIn PDF document text
    • http://missunik.space/yellow_pokemon_gameboy_color23gxj.pdfIn PDF document text
    • https://cdn.sqhk.co/lukumuzu/ejbifuo/zombie_tsunami_apk_hack_todo_desbloqueado.pdfIn PDF document text
    • https://cdn.sqhk.co/gixotagokezu/ghahjtb/chess_evaluation_piece_values.pdfIn PDF document text
    • http://somavifidovogi.iblogger.org/sevivigumekofovedipuxekof.pdfIn PDF document text
    • http://digozulujatozuj.iblogger.org/39046267866.pdfIn PDF document text
    • http://idealica-italiaoficial.site/how_to_be_rich_in_your_early_20sz8r3w.pdfIn PDF document text
    • https://cdn.sqhk.co/buvaboda/1w1pggs/kopuxemufibebijowa.pdfIn PDF document text
    • https://cdn.sqhk.co/vafizolubev/fjdzieE/beat_street_full_movie_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/rolileduvof/iwPjh03/red_bardot_top_missguided.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rafutunobediga.epizy.com/bharat_no_map.pdfIn PDF document text
    • http://zojimako.rf.gd/giluzefowusokenotetaf.pdfIn PDF document text
    • http://vebagakid.onlinewebshop.net/gotuguron.pdfIn PDF document text
    • http://mafivofadol.epizy.com/avakin_hack_mod_apk.pdfIn PDF document text
    • http://maxuluxusit.atwebpages.com/american_english_file_5_teacher_s_book_free_download.pdfIn PDF document text
    • http://kefujuvaw.epizy.com/logilulibowosanawoti.pdfIn PDF document text
    • http://ditanumugagoma.myartsonline.com/49741233079.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_off0000dbd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD5 5224 bytes
SHA-256: c4e92cd95a180cae4c2514407eeb8f94f0acd57c17b11b8b3c924a331207ad0e
font_01_sfnt_off0000edaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDAF 12184 bytes
SHA-256: 842b2a3fac9a18de2171ded2761b40c7e2c1ed91ee4c89621b9da5e722821434

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