Malicious PDF — malware analysis report

Static analysis result for SHA-256 0514142e5eee441b…

MALICIOUS

PDF

108.4 KB Created: 2021-05-02 13:57:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0b18e7c3f176c33dd5ec5a7f92b31ee SHA-1: f2f81507d5d2057fab16ffead98fb5a853b005b3 SHA-256: 0514142e5eee441bf2ad526225e68dea75da988dc322f13aad711953878f440a
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF that contains embedded URLs pointing to other PDF files hosted on various websites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were directly extracted, the presence of external links suggests a multi-stage attack where the user is directed to download and open another malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://www.surajinformatics.com/wp-content/plugins/super-forms/uploads/php/files/070d28298cbf0d4bbea271f8e72c2bce/nadovaxowivadi.pdf
    • https://cosalesrep.com/wp-content/plugins/super-forms/uploads/php/files/f4fd2bf90bb9b61978c011818a36ff2d/46171648196.pdf
    • http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606cf4d8b7dfd---rokujifokefupalu.pdf
    • https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/ov0mec5snjcgchn82iubbgtcu9/nedomivutilitobozirete.pdf
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16089fa3f01316---94369456595.pdf
    • https://accesoriosalmayor.com/images/userfiles/file/23980708743.pdf
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075a14520a23---xaxokevam.pdf
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/b4e7a3df8b3275ae688f9dc7c03e5104/xekumafowowebur.pdf
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607dce35941fb---wituxepagasetuzoluwug.pdf
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160792082b0edb---58048878830.pdf
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/6acp8fq8mt6dgginopmku4n9vh/pazoviditibovukareli.pdf
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/f1dc735e86fe44234e6a1d69f86074e0/96406257596.pdf
    • http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d32288b8d1---89922983584.pdf
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b3b44af988---raranixevojapivugekuni.pdf
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608454d3943ba---70783526951.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.fontrix.comhttp://www.nhncorp.com
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=sony+zs+rs60bt+manual+espa%25C3%25B1ol
    • 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://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001391d.bin
c71a8d97615edd445b682ea52cfe5448cd48dbf7ee483c8431c73748802cec8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1391D 5868 bytes
font_01_sfnt_off00014cba.bin
09804944af13cf2e972e3dd928f7fadf858a40503d3691490aa0826451dd6f5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14CBA 6340 bytes
font_02_sfnt_off00016110.bin
2a5ed3b89790eac1a7739a7a178365e9b9e0afeeeb3598efc6a89a4a6f02b58d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16110 11656 bytes
font_03_sfnt_off000187cb.bin
4771249fa6886a2e0aa5abd0a55adbee0abac152b8308270ccc3cda0e22257da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x187CB 9236 bytes

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