Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f39659a0ca0357d…

MALICIOUS

PDF

50.2 KB Created: 2021-06-16 13:46:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b8be53ba9ef8b472b390a80bc87acc64 SHA-1: f870b3d0ea614a11edbcfd237ab1d32206a0439f SHA-256: 6f39659a0ca0357d5628a5e28bf56559fa475f490d34a4703969e7a531faa144
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file contains numerous links pointing to compromised WordPress sites, indicating it functions as a link farm. The presence of 'utm_term=android+spoof+gps+location' suggests a lure related to GPS spoofing, potentially to trick users into downloading malicious applications or visiting phishing sites. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9443

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://allytemp.ru/uplcv?utm_term=android+spoof+gps+location PDF link annotation
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1609b0860c0d5c---11809979287.pdfIn PDF document text
    • http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16088515e79bb6---loret.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160ac40248cf28---7851105311.pdfIn PDF document text
    • http://ptaki.info/imgekoprojekty/files/44780512886.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16087a14a11df8---dazekejuxidafezupozabor.pdfIn PDF document text
    • http://blevy.com/ckfinder/userfiles/files/73971162130.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/36583e2084191e58697749b9d910b05e/86074744225.pdfIn PDF document text
    • http://thuephotocopytaihanoi.com/upload/files/finusikezinadelusora.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075b813431ba---dodupejemukofipofax.pdfIn PDF document text
    • https://www.vibrationmonitoring.asia/wp-content/plugins/formcraft/file-upload/server/content/files/16098aff739fd8---72693097057.pdfIn PDF document text
    • https://samarpanbharat.org/trila/userfiles/file/30774657006.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160a630c7e54c6---19801087338.pdfIn PDF document text
    • https://www.perfumista.co.uk/wp-content/plugins/super-forms/uploads/php/files/810fbed586849a9bbcb9ba421431dc4f/sokuzibipugiweveku.pdfIn PDF document text
    • https://akproauto.com/nbloom/fckuploads/file/dekatamejefupexowozu.pdfIn PDF document text
    • http://sva-jeanroze.com/xmedia/file/15225293214.pdfIn PDF document text
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/16072fb90dd918---dikit.pdfIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

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