Malicious PDF — malware analysis report

Static analysis result for SHA-256 74ca7838641360a6…

MALICIOUS

PDF

75.6 KB Created: 2021-05-13 02:42:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8af868beca628ce0adc7a7909663fe80 SHA-1: 066bb1037f9b215a1c59fb2f27217dc548d7c1eb SHA-256: 74ca7838641360a656ddd972003fcbb0bca50559989ee6d595dce711bdb24913
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, despite one being marked as benign, suggests the document is designed to redirect users to potentially harmful sites. The document body is heavily obfuscated, but the overall structure and heuristic firings point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/9396129b6eda2a119e996a98d0e160b3/39287380582.pdf
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607e6d378a76a---niropozetumebat.pdf
    • https://www.lightingdynamics.com/wp-content/plugins/super-forms/uploads/php/files/2eb56ff86a4287658b473df0950def6c/momani.pdf
    • https://hogies.com/includes/template/uploads/file/pokavopabamakib.pdf
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/1245a97c3a092e4a9fb9c9d19c0a881b/13038223499.pdf
    • https://unicornproduction.gr/wp-content/plugins/super-forms/uploads/php/files/dd057328f96882484946134f3351c385/71697326877.pdf
    • https://www.sudburyhighspeedinternet.ca/wp-content/plugins/super-forms/uploads/php/files/62b2771b7b223d5fd29ef19b18380f6c/20154967417.pdf
    • http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/r71u4ce73u7ak24q2fta460ai1/mevageborag.pdf
    • https://flycam.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160784da7a05a8---begitigakajurafo.pdf
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/919b5dfb84821f22fe0829351d1e5fd9/52630298372.pdf
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091aa4c5f2a1---xojefokut.pdf
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f5660707f1---jonulesawimonamawegot.pdf
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/1606d1879b9624---mivadi.pdf
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608834d68c82a---mituxulu.pdf
    • https://www.hausbootgeiseltalsee.de/wp-content/plugins/super-forms/uploads/php/files/qm9m997bu6tei5in6jfakpf47o/13180459596.pdf
    • http://www.kocay.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7d6e2b958---44837901080.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=d%2527+accord+2+answers
    • 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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c823.bin
86b84b6de53b6295f0a5e78969834b5b76660d63c2137ee6e3488cf3f115fa6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC823 4820 bytes
font_01_sfnt_off0000d892.bin
f6ca58d9bb3ad61c3ce6952eb8fe15366ce8a799a97de5bc28f2255dbb72d3da		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD892 10664 bytes
font_02_sfnt_off0000fd1a.bin
eaa138153142e1b202f6e132b5b79d2ae4483da1523e62d7c19f47fa5ad289e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD1A 16068 bytes
font_03_sfnt_off000111b8.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111B8 4324 bytes

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