Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bc1643165260ac0…

MALICIOUS

PDF

67.0 KB Created: 2021-02-19 17:14:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 75d47219b2a38f74ae19438be8883bc5 SHA-1: 3d8e6564c114f532df6d46cbcb2a2a50904cd10b SHA-256: 9bc1643165260ac077d93322d9d559c1fece4e53e15a1ca04b3b5809c7acbe4e
126 Risk Score

Malware Insights

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

The sample was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many of which point to disposable domains and are used in a link farm pattern, suggesting an attempt to redirect users to malicious sites. The presence of external URIs and the link farm heuristic indicate a phishing or scamming attempt.

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://maypoin.ru/strik?utm_term=uppababy+vista+rumble+seat+2014 PDF link annotation
    • https://cdn.sqhk.co/vadetegubufo/C7ihzhe/motogp_schedule_television.pdfIn PDF document text
    • https://cdn.sqhk.co/semiwewedazi/iidrkbH/strategic_human_resource_management_definition_dictionary.pdfIn PDF document text
    • https://cdn.sqhk.co/buzulexoxuve/jcOjgTB/44993883985.pdfIn PDF document text
    • https://cdn.sqhk.co/toromerepowa/he6gj4R/koxitadusazas.pdfIn PDF document text
    • https://cdn.sqhk.co/vefoveted/dwRGihr/police_scanner_mobile_app_android.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvepelela/JHZjgdX/word_game_apps_for_ipad_free.pdfIn PDF document text
    • https://cdn.sqhk.co/raninogozo/BijgiJC/car_wallpaper_hd_3d.pdfIn PDF document text
    • http://jevopapivixepe.iblogger.org/lucid_dreams_sheet_music_clarinet.pdfIn PDF document text
    • https://cdn.sqhk.co/rinugezig/gjcaVX5/cars_for_sale_under_5000_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/pawapoma/ePvgjCf/wikud.pdfIn PDF document text
    • https://cdn.sqhk.co/kafexobesa/jwjbhiH/auto_change_wallpaper_windows_xp.pdfIn PDF document text
    • http://mewebewenuzotez.iblogger.org/82235463510.pdfIn PDF document text
    • https://cdn.sqhk.co/lopokevofoti/XjjqxlV/amtrak_jobs_chicago_illinois.pdfIn PDF document text
    • http://jorolog.22web.org/30195811301.pdfIn PDF document text
    • https://cdn.sqhk.co/baxorurifina/rMhgihw/pamiko.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://segixiw.epizy.com/financial_reporting_and_analysis_13th_edition_ebook.pdfIn PDF document text
    • http://savefativiluz.epizy.com/kenmore_he3_washer_not_draining.pdfIn PDF document text
    • http://duzunop.rf.gd/hello_neighbour_act_3_guide.pdfIn PDF document text
    • http://tisudaxutuz.epizy.com/microsoft_access_crackeado.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_off0000c6ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6AD 5672 bytes
SHA-256: 3e74263dd718a4433b182ae101184423619fa09dae741d03e85bcf740f03a0b9
font_01_sfnt_off0000d9f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F2 10916 bytes
SHA-256: c135d6cd23f38c20f2cc5a22fc3485f7d49e39bbbdbc78bd805d9f23518a6277

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