Malicious PDF — malware analysis report

Static analysis result for SHA-256 6617a29313de4a85…

MALICIOUS

PDF

75.0 KB Created: 2021-04-02 01:43:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 12921e88d43982ff79429fb840dd0b1c SHA-1: 41949d8891fa5801533b78045e25d5f48e13e693 SHA-256: 6617a29313de4a85940ad1e8db4832526eb01cb797309318730375c2fb6f5643
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a large number of external links, many hosted on disposable domains, indicative of a link farm. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or distributing further malware. The primary purpose appears to be directing users to a network of sites, potentially for SEO manipulation or to serve malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8479

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • 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://mezovuduw.ru/award?keyword=ethical+issues+definition+pdf
    • https://voxonevixes.weebly.com/uploads/1/3/4/3/134383310/3496559.pdf
    • http://uscovidcharts.com/divina_commedia_canto_1_purgatorio_testo1pb77.pdf
    • http://lugirepapirizo.scienceontheweb.net/geographical_location_of_pakistan_in_urdu.pdf
    • http://7lessons.fun/69374605047iaaqg.pdf
    • https://gilawidukawopux.weebly.com/uploads/1/3/2/7/132741225/wariwuxu-jedewe-zodajexi.pdf
    • http://majejuf.22web.org/zoluporav.pdf
    • https://xesaranit.weebly.com/uploads/1/3/2/6/132696194/wudodexikusirobuzuzi.pdf
    • https://rajilogibakew.weebly.com/uploads/1/3/5/3/135326989/658734.pdf
    • http://lunatan.medianewsonline.com/benjamin_franklin_an_american_life_download.pdf
    • http://kiwenalod.medianewsonline.com/what_are_the_important_uses_of_report_writing.pdf
    • http://m-ryanaf.site/45563476996z0az2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/rixevozajixezos/93383023907.pdf
    • https://ee67c5b3-b4d3-4257-b425-af55881d3a68.filesusr.com/ugd/c60da7_840b00eb9b29415fb769dfdc8480c998.pdf?index=true
    • http://wiwosotu.myartsonline.com/polk_magnifi_max_soundbar_system_specs.pdf
    • https://s3.amazonaws.com/pevarijidasalop/6472972819.pdf
    • https://s3.amazonaws.com/davolazupivowi/honda_pressure_washer_4000_psi.pdf
    • https://f815f12b-539f-4060-8ed9-abd2caada31b.filesusr.com/ugd/ceb2e8_be87fe916e73415e978e351481aab6d2.pdf?index=true
    • https://s3.amazonaws.com/murudute/moultrie_a-5_troubleshooting.pdf
    • http://wowadepadon.rf.gd/laxadapuziwoxitowenuwap.pdf
    • https://44f68060-d5e3-4d58-b4e7-e3760392f352.filesusr.com/ugd/49488e_0946b8334f3645bcaf8f3c7a5e1ae9b8.pdf?index=true
    • http://gitogopafo.epizy.com/sh_phonics_worksheets_kindergarten.pdf
    • https://s3.amazonaws.com/jupudizadid/age_of_empires_mac_os_x.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001147e.bin
99fcbb2e2efbc214ef91ed9c15d016aa6e44c8e945d022ffe7fddb602ff0666d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1147E 5104 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.