Malicious PDF — malware analysis report

Static analysis result for SHA-256 28f8d1faf7d631a0…

MALICIOUS

PDF

69.5 KB Created: 2021-02-27 10:41:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: d0759d6d349d9e02e08eb3f9854fa854 SHA-1: 4923f24fad9c1543a38b5df260892e2a9fb729c8 SHA-256: 28f8d1faf7d631a0b651eee3b0bc9bf2d015f75c0018c2158eb292be9b3ab927
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable or suspicious domains, indicating a link farm or redirection scheme. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of an attempt to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7916

Heuristics 4

  • 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
  • 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://dugedepap.ru/award?keyword=udi+u818a+drone+with+hd+camera PDF link annotation
    • https://torenamabaj.weebly.com/uploads/1/3/4/4/134486332/lezidow_junozotaxoz_dupuwavawomep_nupefusogaz.pdfIn PDF document text
    • http://vinuporabomod.iblogger.org/heart_disease_prevention_fact_sheet.pdfIn PDF document text
    • http://summerita.fun/mega_bharti_2019_online_form_date_maharashtraweyag.pdfIn PDF document text
    • https://kowokilu.weebly.com/uploads/1/3/0/7/130740572/2963524.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482415/normal_5fcaf2f883f64.pdfIn PDF document text
    • http://psylath.com/activia_black_cherry_nutrition_informationv9j6j.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386834/normal_603092bd2557d.pdfIn PDF document text
    • http://tolunisusij.22web.org/ranofojo.pdfIn PDF document text
    • http://ejqy.com/adobe_premiere_pro_cs5_tutorial9b1tv.pdfIn PDF document text
    • http://womans30planet.com/the_aeneid_book_4ixa6s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366036/normal_5ff279c5d8b30.pdfIn PDF document text
    • https://resawipodejevi.weebly.com/uploads/1/3/0/8/130814711/7096035.pdfIn PDF document text
    • http://bred-enligne.com/harry_potter_wizards_unite_guide_bookbqjlw.pdfIn PDF document text
    • https://fovojewonot.weebly.com/uploads/1/3/4/6/134669065/zebaguraxe_xonebala_tadox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nulanajivokavos.rf.gd/barking_dog_video_free.pdfIn PDF document text
    • http://daloketo.epizy.com/76752719042.pdfIn PDF document text
    • http://lepejifilafimif.rf.gd/dk_canoodle_font.pdfIn PDF document text
    • http://garubokiboja.rf.gd/13773662589.pdfIn PDF document text
    • http://ranurig.rf.gd/15419293482.pdfIn PDF document text
    • http://tuzotulerijenej.rf.gd/92742202927.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001079e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1079E 5296 bytes
SHA-256: a4849d6ec4aa0b68ff438f45229efc1bf0907bd3642f2ff7c253f35c7b733c27

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