Malicious PDF — malware analysis report

Static analysis result for SHA-256 64dba5c82c2e2616…

MALICIOUS

PDF

76.3 KB Created: 2021-02-27 11:01:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 6f7cf2310bc65b173fa34d16362e6d61 SHA-1: 60022a3174b4d8a151d24ec9484f1f79754863ae SHA-256: 64dba5c82c2e261654cc945d79b97f6f3bf37756fe3c38270da94590f81cf2ac
124 Risk Score

Malware Insights

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

This PDF file was identified as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The document functions as a link farm, presenting numerous URLs disguised as content related to movie downloads, a common lure for phishing or malware distribution. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports this, noting the use of disposable hosting and a high number of distinct hosts, suggesting an attempt to evade detection and maximize reach.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8293

Heuristics 4

  • 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://lozipotod.ru/award?keyword=world+war+z+movie+free+download PDF link annotation
    • https://muwikoli.weebly.com/uploads/1/3/2/7/132740525/900d96e7b1bbc9c.pdfIn PDF document text
    • https://jubiporosevuzu.weebly.com/uploads/1/3/2/6/132695682/1f41a7ac0.pdfIn PDF document text
    • http://jojidasusesot.sportsontheweb.net/fujitsu_fi-7160_duplex_scanning.pdfIn PDF document text
    • http://jofufunobek.sportsontheweb.net/tavel.pdfIn PDF document text
    • http://50offit.pro/how_to_treat_a_cystic_pimple_overnightz2afp.pdfIn PDF document text
    • http://zevewidojodot.mywebcommunity.org/88828938325.pdfIn PDF document text
    • http://junumidutuzakox.getenjoyment.net/how_to_do_escape_room_on_zoom.pdfIn PDF document text
    • https://danuredotur.weebly.com/uploads/1/3/2/8/132814989/xumopusofosag.pdfIn PDF document text
    • http://jiwapadenejeza.getenjoyment.net/94739148996.pdfIn PDF document text
    • https://xofezariro.weebly.com/uploads/1/3/1/8/131871505/77ce37870f80d.pdfIn PDF document text
    • http://nesorus.mywebcommunity.org/16979139146.pdfIn PDF document text
    • http://midarujiwuvi.mygamesonline.org/bazadogenawabibipekemafi.pdfIn PDF document text
    • http://goligofalu.medianewsonline.com/what_is_via_character_strengths.pdfIn PDF document text
    • http://service-hire.com/autocad_drawing_software_download_for_pc4uns1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wonanikapudidak.atwebpages.com/7492924176.pdfIn PDF document text
    • http://sabiwilurase.atwebpages.com/how_to_measure_productivity_at_work.pdfIn PDF document text
    • http://zutugidod.onlinewebshop.net/dueos_de_los_medios_de_produccion_del_feudalismo.pdfIn PDF document text
    • http://jirabasojexosud.atwebpages.com/72375026327.pdfIn 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_off0000f3fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3FE 4800 bytes
SHA-256: fa4e32de857451ab0e127b4c65fbdce5e4408d2e25c6ffdb206d5d4f8cf40a00
font_01_sfnt_off0001044f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1044F 10504 bytes
SHA-256: 0addc59129da30e9e568463a80aa2871fd71b88eb299f31d9dc677261eccd35c

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