Malicious PDF — malware analysis report

Static analysis result for SHA-256 b06ff84db9addaef…

MALICIOUS

PDF

141.5 KB Created: 2021-03-21 02:53:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: b36ebe283f6d24c62221294c96eec1a5 SHA-1: 26f28c7a1753c47354ad015fb8dc9226c5fc1fd8 SHA-256: b06ff84db9addaef2f09eea103f2136c7e0b41391dcf135aad1d433b07e2eb73
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 URLs, many of which point to disposable hosting or link farms, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to a movie title, likely used as a lure to entice users to click on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://dugedepap.ru/strik?utm_term=el+desafio+del+amor+40+dias+pelicula+completa+online PDF link annotation
    • https://cdn.sqhk.co/mixaluwekitu/ih3Ggd2/civil_war_battle_of_chickamauga_facts.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401555/normal_5fe5e25760807.pdfIn PDF document text
    • https://cdn.sqhk.co/pijavagoke/qz22yic/ants_in_car_door_seal.pdfIn PDF document text
    • https://cdn.sqhk.co/vomisape/gfDugqW/descargar_block_city_rampage.pdfIn PDF document text
    • http://medefoduma.iblogger.org/12181051238.pdfIn PDF document text
    • https://cdn.sqhk.co/vikimono/iciehf4/duxaba.pdfIn PDF document text
    • http://kvrovk.xyz/natomel76ibm.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/Goge6ib/lean_bulk_workout_plan.pdfIn PDF document text
    • https://cdn.sqhk.co/kamupudoro/BKeShdv/sufafabivikinetezabifi.pdfIn PDF document text
    • https://cdn.sqhk.co/tumowara/kij5CMh/48317512054.pdfIn PDF document text
    • https://cdn.sqhk.co/muvotugi/0WhggcW/cinemark_ecuador_cartelera.pdfIn PDF document text
    • https://cdn.sqhk.co/kasuvapexal/svic7hc/jeperujezisavazowege.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450504/normal_600ed2014fcec.pdfIn PDF document text
    • http://allerop.xyz/corey_p_smithbjujb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367289/normal_601a9e9650383.pdfIn PDF document text
    • http://ganexofom.iblogger.org/luzuvovalusepatud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406776/normal_601c63a2cda87.pdfIn PDF document text
    • http://milansit.space/lozimezau8f9k.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tekufokejogarik.rf.gd/phonics_worksheets_for_adults_printable.pdfIn PDF document text
    • http://fowafad.epizy.com/juwudobapewesezomad.pdfIn PDF document text
    • http://gexazovaf.epizy.com/42663100208.pdfIn PDF document text
    • http://seguwogira.rf.gd/tofotizapuzinesuzifuxiba.pdfIn PDF document text
    • http://xigokabuwawi.epizy.com/82742545856.pdfIn PDF document text
    • http://wepaxilex.epizy.com/bomutomobokufonada.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_off0001eac7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1EAC7 5488 bytes
SHA-256: 9506272d4e1f1a4ad05f598183ef5bebfdce8a8a60be7b90fe4a6da5572d867e
font_01_sfnt_off0001fd62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FD62 13112 bytes
SHA-256: 8f3bc0cf84cb6989ffaa88f201e3348e2abb03e54f7ee3c61505c0c9a96b17e3

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