Malicious PDF — malware analysis report

Static analysis result for SHA-256 acd0478c7e81d2c2…

MALICIOUS

PDF

86.3 KB Created: 2021-06-27 08:42:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: bc734b30eccfc64b20232b1724bf7b44 SHA-1: a7d4da32cad9c5a271c2c5b5de7cd4d3ca5a81b6 SHA-256: acd0478c7e81d2c28f0ac029ea1804425e646af36d4b06c915a59f0eb4c519bc
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains an embedded URI that directs the user to a suspicious external URL, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of an external URI and the overall detection suggest the document is designed to lead the user to a malicious site, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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 https://pistant.ru/uplcv?utm_term=robert+frost+directive+pdf
    • http://staging.impactredevelopment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160969513db0e0---relonuwabowamigami.pdf
    • https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/88a8e2daece72276ab4fafc1e8eff6ac/bovadapijanibixupexaf.pdf
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/1607c27e913024---40780669279.pdf
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/e32of008kn89vpab747381ied4/riroreluxowuf.pdf
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c93e39cf00d---26181268430.pdf
    • http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/17538045060bc612800f68.pdf
    • http://lyzebrno.cz/userfiles/file/54887375042.pdf
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078579a5c7e3---puvixigobafenutefi.pdf
    • https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/e7ab6b924ed3999d00b78670af745e13/jejizum.pdf
    • http://aldo-ins.com/userfiles/file/19852123912.pdf
    • http://gorisum.net/fckeditor/upload_file/file/36328521374.pdf
    • https://makeswebsites.com/clients/c/c8/c8c605999f3d8352d7bb792cf3fdb25b/File/koposapidodomawiki.pdf
    • http://navigator-33.ru/media/file/milimigibuvaw.pdf
    • https://yidinfo.net/wp-content/plugins/super-forms/uploads/php/files/c3a3gujkliuu7bjsokjuliv8l7/60036803921.pdf
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/8t9n01cr7pi5cvqcia5l2lpq60/pevewilelejobam.pdf
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16070ae687d502---nulepada.pdf
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca7c3ada2b---xanivo.pdf
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160855a232633a---78271535258.pdf
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608547c1db0d8---61012591421.pdf
    • http://al-bandak.com/userfiles/file/zizaxupatarumexiri.pdf
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160cd3db217f83---zutut.pdf
    • http://ipsgroupjjn.org/userfiles/file/16032741084.pdf
    • 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_off0000f085.bin
88e3434cfe8609a18026870bce0ec9c3561ecd6f46862e8669d05c3d5b2fa93e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF085 10552 bytes
font_01_sfnt_off00010889.bin
8b3d344bef631e23692561e54aba8cbe3ea276ed299dcf1bbb4abe33ce904b60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10889 16724 bytes
font_02_sfnt_off000133de.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x133DE 16792 bytes

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