Malicious PDF — malware analysis report

Static analysis result for SHA-256 aab55ebc2ad5f89d…

MALICIOUS

PDF

82.0 KB Created: 2021-02-26 13:47:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: f3a3b1dd702ee79c2d597caaeb8e1642 SHA-1: ad382839d56687bb865f6fe701b5c26223f4a641 SHA-256: aab55ebc2ad5f89d73e35ea458cc8496c4d3483d22e4fcf2466768dd635d39cc
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 URIs, with one pointing to 'ponafet.ru', suggesting a phishing or malware distribution attempt. The PDF SEO Disposable Link Farm heuristic indicates a large number of links hosted on disposable domains, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ponafet.ru/strik?utm_term=murray+12.5+hp+40+riding+mower PDF link annotation
    • http://clubstore.info/gopugijizalesupasokumvolp.pdfIn PDF document text
    • http://lg-copyrightforms.com/arduino_ide_alternative_linuxgxymp.pdfIn PDF document text
    • http://tafuxasomup.getenjoyment.net/eleanor_and_park_summary_no_spoilers.pdfIn PDF document text
    • http://nogurufegu.mygamesonline.org/atari_flashback_7_power_supply.pdfIn PDF document text
    • http://gevixadita.22web.org/vikalozupemagamaz.pdfIn PDF document text
    • http://sujabupinoda.scienceontheweb.net/tigijog.pdfIn PDF document text
    • http://kasovipitafo.22web.org/bter_syllabus_2nd_year_civil.pdfIn PDF document text
    • http://wivuperafuzo.mypressonline.com/colorado_academic_standards_reading.pdfIn PDF document text
    • http://xejopegig.mypressonline.com/resumen_por_capitulos_libro_nada_carmen_laforet.pdfIn PDF document text
    • http://kigenavozos.iblogger.org/11977092825.pdfIn PDF document text
    • http://persequen.com/361718698642pk6y.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/patilawasu/street_fighter_5_apk_revdl.pdfIn PDF document text
    • http://wutodabegaf.epizy.com/30456421591.pdfIn PDF document text
    • http://parisexubuvi.rf.gd/bebizakivanolulir.pdfIn PDF document text
    • http://fopajika.epizy.com/jump_force_deluxe_characters.pdfIn PDF document text
    • http://pakewerulawe.rf.gd/base64_image_to_bitmap_android.pdfIn PDF document text
    • http://vitusaw.rf.gd/backup_android_app_using_adb.pdfIn PDF document text
    • http://gidubivej.rf.gd/consumer_reports_best_small_suv_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/samisikexuko.pdfIn PDF document text
    • https://s3.amazonaws.com/jejulurowev/canadian_visa_application_form_in_the_philippines.pdfIn PDF document text
    • http://zekubegem.epizy.com/sewifalorifemirifu.pdfIn PDF document text
    • http://fufezexu.epizy.com/40991616730.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_off000102b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102B6 5932 bytes
SHA-256: 71c9fecac6e7df33d8a5f7537ee61e4f3eba6edfde7a97a9b6ebbf8136e3b7e9
font_01_sfnt_off000116f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116F3 10612 bytes
SHA-256: c7984d63ff1c693efd1b5a85f1447bdae83a15d6484f52c30b64448e2f0272a7