Malicious PDF — malware analysis report

Static analysis result for SHA-256 e21bdcc0ec8a2276…

MALICIOUS

PDF

80.6 KB Created: 2021-02-25 16:30:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 5f2213feac2c91bf7921574e9fbf8d11 SHA-1: 4ee2d24f2133d949299548b2067057b42ee06aca SHA-256: e21bdcc0ec8a2276d1bdeab50056fbd90f72710599094fe2431235b20cc1806c
184 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to employee benefits, suggesting a lure to a phishing or scam website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/award?keyword=what+benefits+do+marriott+employees+get In PDF document text
    • http://nejevefivi.mypressonline.com/69316754476.pdfIn PDF document text
    • http://pogawubujogeje.mypressonline.com/what_are_the_requirements_to_become_a_real_estate_agent_in_victoria.pdfIn PDF document text
    • https://cdn.sqhk.co/xesozugis/bfjjPOT/top_prison_escape_movies_list.pdfIn PDF document text
    • https://lolifibek.weebly.com/uploads/1/3/4/6/134634661/tidupakakavebuzazuju.pdfIn PDF document text
    • http://tenakotete.22web.org/mepijelidadoge.pdfIn PDF document text
    • http://yyyyyyhhhhh.space/braveheart_theme_taylor_davis_mp3_fri0mly.pdfIn PDF document text
    • http://itagreen.fun/ratubepisaxewiravopulv0bfc.pdfIn PDF document text
    • http://jipuvojenibomig.22web.org/switzerland_fatca_reporting_deadline_2019.pdfIn PDF document text
    • http://pufuwobexoz.iblogger.org/hindi_letters_with_english.pdfIn PDF document text
    • http://imm-shoes2.club/19137604571kwjus.pdfIn PDF document text
    • https://cdn.sqhk.co/vemosoveveb/ghxgfy0/monkey_mania_penrith_jobs.pdfIn PDF document text
    • http://delunabiwefepef.22web.org/free_kjv_bible_with_concordance.pdfIn PDF document text
    • http://javebamugizal.66ghz.com/guvomerirawipafe.pdfIn PDF document text
    • http://adyga.site/novixapvclwa.pdfIn PDF document text
    • https://cdn.sqhk.co/dibirolinu/p1giiuT/lastcraft_survival_mod_apk_free_craft.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nufiwimuzobo.onlinewebshop.net/walgreens_automatic_wrist_blood_pressure_monitor_reviews.pdfIn PDF document text
    • http://tososite.onlinewebshop.net/how_to_set_time_and_date_on_vtech_cordless_phone.pdfIn PDF document text
    • http://pekuruzaxi.epizy.com/arabian_nights_aladdin_sheet_music.pdfIn PDF document text
    • http://tizabapokumi.rf.gd/61482681540.pdfIn PDF document text
    • http://pulutugorivexek.atwebpages.com/how_many_carbs_are_in_a_blueberry_donut.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_off0000fd06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD06 5712 bytes
SHA-256: 5eceee2345cb321e3910c815de3e7cf0a1bfde8fdedc2ab3bf5be589eaa8c60c
font_01_sfnt_off00011059.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11059 10636 bytes
SHA-256: 0b0dc4e17cc07986992d4209235f8ac7da25be78f475665fc293e655e621d4a8

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