Malicious PDF — malware analysis report

Static analysis result for SHA-256 5209be6f81cdd33d…

MALICIOUS

PDF

76.0 KB Created: 2021-02-26 08:15:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b32737490dea9595589d3e324d582492 SHA-1: ab388bc751785a4a4ac899869e150dbb1d4460d4 SHA-256: 5209be6f81cdd33d38b53ce81fa72a1676687911bb17a50c6b31d85fbf90f3cd
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/award?keyword=nikon+coolpix+p510+charging+time PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393220/normal_6017a83de17c1.pdfIn PDF document text
    • http://wejuzofibab.medianewsonline.com/how_to_buy_a_convenience_store.pdfIn PDF document text
    • http://xuwuvewisin.mypressonline.com/10753406635.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421943/normal_602b6afb11696.pdfIn PDF document text
    • http://zafogititug.22web.org/memorial_service_programme_template.pdfIn PDF document text
    • https://mozepuboxiwagu.weebly.com/uploads/1/3/6/0/136094106/86306a64103.pdfIn PDF document text
    • http://futubog.22web.org/cashmere_cat_miss_you_music.pdfIn PDF document text
    • https://cdn.sqhk.co/dunokufimove/kcRkhes/world_war_2_the_complete_history_download.pdfIn PDF document text
    • https://cdn.sqhk.co/gogojelawov/Aejaqgg/truck_upholstery_repair.pdfIn PDF document text
    • https://cdn.sqhk.co/wojipezusax/fDiiAhb/90145977231.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456667/normal_6033d1ed7659e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rorodev.rf.gd/astm_a325_bolts.pdfIn PDF document text
    • http://garapaf.epizy.com/20786337034.pdfIn PDF document text
    • http://webewogugesuwus.rf.gd/b_pharm_application_form_2018_tamilnadu_government.pdfIn PDF document text
    • http://pojozija.onlinewebshop.net/english_conversation_topics_for_class_7.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_off0000e0b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B2 5588 bytes
SHA-256: f785b037901008af53aeacd050b871e2f93fa2d0a3bbf49a55ac3bfd4d180a7c
font_01_sfnt_off0000f3a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A7 15220 bytes
SHA-256: 01f5b0aa4eb46a110cbac90ba8cc0fd0b7f38780e1a39686536fde8635f060e3