Malicious PDF — malware analysis report

Static analysis result for SHA-256 68699bbc237f3458…

MALICIOUS

PDF

71.9 KB Created: 2021-09-08 23:56:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 363db792c049ebecd095a78a6d534e4d SHA-1: c6ef4ec0e9f3eb0b5944b37816838dd682b5a82b SHA-256: 68699bbc237f3458b6e7d9c53524c9d62a60884efe291096fe23cc260720e079
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which are hosted on disposable domains and appear to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is a common technique for initiating malicious actions within PDF documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7118

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://queure.ru/uplcv?utm_term=william+henry+pdf PDF link annotation
    • https://kanalprofi.at/UserFiles/file/47400398429.pdfIn PDF document text
    • http://tutaylamhet.com/storage/ckfinder/files/524746025.pdfIn PDF document text
    • https://amgaa.org/temp/files/69389414791.pdfIn PDF document text
    • http://eiffelflowersquesnel.com/userfiles/file/gorijimenasasexesiturelok.pdfIn PDF document text
    • http://varadimasszazs.hu/uploads/files/kiwatigisarezadaselitoxem.pdfIn PDF document text
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/1ca0b25b0d9c411b4d864227ced71b88/89106786267.pdfIn PDF document text
    • https://damsindia.org/admin/uploads/file/37025083786.pdfIn PDF document text
    • http://druckmaschinenservice.com/uploads/fce/files/65594686647.pdfIn PDF document text
    • https://cahayamimpi1.com/contents/files/73460951226.pdfIn PDF document text
    • https://mimpiindahsatu.com/contents/files/88375165238.pdfIn PDF document text
    • http://decom.pro/admin/ckfinder/userfiles/files/86512380091.pdfIn PDF document text
    • https://audreyheselmans.com/_files/file/sakozot.pdfIn PDF document text
    • https://titishop.co/upload/files/rixajawifitelulot.pdfIn PDF document text
    • https://riolospettacoli.it/filesUploads/file/jejudesuxajo.pdfIn PDF document text
    • http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/0cfcaebe0d7e24fc1b845b57aea02060/penaravivijimulexuwifusiw.pdfIn PDF document text
    • http://w.scenekunstskolen-efteruddannelsen.dk/ckfinder/userfiles/files/91046351928.pdfIn PDF document text
    • http://eprdel.cz/userfiles/file/gubuxawaziv.pdfIn PDF document text
    • http://belean.pl/userfiles/file/pelipifowepinakogowow.pdfIn PDF document text
    • http://cycling-software.com/files/file/nilabedumovipusefejakavar.pdfIn PDF document text
    • http://mmbassisiprovince.in/files/js/ckfinder/userfiles/files/36134859978.pdfIn PDF document text
    • http://elard-group.com/ckfinder/userfiles/files/68337412526.pdfIn PDF document text
    • http://gamax-motor.cz/data/dokumenty/64280094718.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cdf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDF0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e607.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE607 10484 bytes
SHA-256: 4b40d433ce9e761fa8ce03061b50c7cb149c9f82403f9ea7fbcf0de22c2e3b1d

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