Malicious PDF — malware analysis report

Static analysis result for SHA-256 80272523164ab47a…

MALICIOUS

PDF

96.5 KB Created: 2021-04-30 03:00:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f1a30427d03b0ac271b967ce46f5f2e SHA-1: 19767824de2651e3ba3fae4d291674c2dfb8c4e0 SHA-256: 80272523164ab47a74e0c37664202b3e454197bef104d90fe8219958c5fa10e5
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF document that contains embedded URLs, one of which is associated with downloading other PDF files. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of multiple unknown URLs suggests a campaign to host and distribute malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/b88758c80b7e11e968b527b4bb70878f/nafujeja.pdf
    • https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/5f7ea7d67fe43c818c3feaa19e29ad33/godam.pdf
    • http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/vfg6ut7rtjqh8i21ij4b2q53mb/xeganulajam.pdf
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608405d564b91---jatuxumokamifupon.pdf
    • http://thehawthornnyc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608aadbe0808f---karoziromaresaj.pdf
    • https://absolut-fit-and-dance.de/wp-content/plugins/super-forms/uploads/php/files/o4bcd4rfv731qft89e2oveg9u6/vupoporeliz.pdf
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/a2c6a1065d00ff14b958f40e68033ce5/dovol.pdf
    • http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a302c582e8---roredegoseluv.pdf
    • http://middlegeorgiacoinclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9f0ea951a---93158542624.pdf
    • https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/ek8ni1v54lfmcn25o20h3d2n96/27322343140.pdf
    • http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/16084d5834a1b6---77927211634.pdf
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607f59c911ccd---69919159098.pdf
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16085f72a31df9---69543040093.pdf
    • https://www.nrlandscapes.co.uk/wp-content/plugins/super-forms/uploads/php/files/4578ab092c7d5279bf73db5338106626/28235475665.pdf
    • http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16082fc4ce1e44---rozelimemil.pdf
    • https://callhfelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608190adaa8cc---musapotawuduresawab.pdf
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/1606d47712bc99---78716774703.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=musica+gratis++pc
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010e61.bin
ffeb89eaad713c9717385028f79c9757067aafb2c2382ea8cbab0e6efe35a425		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E61 6744 bytes
font_01_sfnt_off00011f49.bin
a9c7d0eab2d5205def4770f01e99c00caad471c0ca8eaddae9bcdfd163a534f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F49 4624 bytes
font_02_sfnt_off00012f18.bin
7965484c858e73f6f2b75adbe3c356411d0f0d2a6fefb9745b89c9ff422e84c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12F18 11796 bytes
font_03_sfnt_off00015579.bin
028dbaa76d48ae99b02248bacea50134e27ed131f5dd39e25ac401de8961e19b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15579 16312 bytes
font_04_sfnt_off00016b05.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16B05 4324 bytes

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