Malicious PDF — malware analysis report

Static analysis result for SHA-256 32fa556ab187fc72…

MALICIOUS

PDF

85.5 KB Created: 2021-07-01 16:06:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ba2f24066aabf9a3cfb518c1135dde3f SHA-1: 81f47ea750186ed8cdb69759887ebf25a177c8b6 SHA-256: 32fa556ab187fc72cb444b1dee3cd37090695d10ded4b39685884d462cc5f903
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of numerous embedded URLs, many pointing to other PDF files, suggests a phishing or redirection scheme. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://falconartistmanagement.com/ckfinder/userfiles/files/71136611448.pdf
    • http://7tec.ru/userfiles/files/walevano.pdf
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d7c26d3fbb5---vegasasima.pdf
    • http://innospectrum.eu/hirlevel/file/12451942029.pdf
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a6c1e21a67---dekituga.pdf
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1609e5a5f5bc7b---tezanuruv.pdf
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/1608a75fbe261e---tujoroko.pdf
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/1608780612a755---82722393329.pdf
    • http://angerdress.store/ckfinder/userfiles/files/xupovilezamemi.pdf
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d01cb83f30---37843797025.pdf
    • http://carolstoecker.com/clients/c/c6/c60e280709801842a26e47e23f21f170/File/66176508155.pdf
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0ea37952ef---nazaranimuzofubobaxupi.pdf
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/523ba88fec54c7d03710c82eb42c61c0/83581693884.pdf
    • https://zionapostolicministries.org/uploads/files/rubisadezevulifuj.pdf
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160d3cce58fc1a---21926144526.pdf
    • http://findmealocalpainter.com/insurazon/admin/userfiles/file/xajotisi.pdf
    • http://www.kindytennis.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608087e90b47e---6674636433.pdf
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160b41668191ad---pukososupedu.pdf
    • https://przyklejki.pl/userfiles/gokojibujur.pdf
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/160a99ac58d5ea---72403184239.pdf
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/16073b44c6d624---mibok.pdf
    • http://juentai.com/userfiles/files/vonubepazobejowojo.pdf
    • http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099d15d82ddc---32022809314.pdf
    • https://www.opdrrustukalac.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b82aff5ef55---94460565565.pdf
    • https://bataretak.com/img/files/file/rerenizodudowov.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=how+to+know+when+ovulating
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed0e.bin
cb56704b8c2013cecc39340d809a7dabc9334ed40269d5e596f36e25f7ecc804		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED0E 16896 bytes
font_01_sfnt_off00011921.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11921 16792 bytes
font_02_sfnt_off00013138.bin
123ca8151c4ad3faa3a2ce7086727a20752852c377d1df12403c93006eff213c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13138 10456 bytes

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