Malicious PDF — malware analysis report

Static analysis result for SHA-256 5722f9daa251878b…

MALICIOUS

PDF

70.0 KB Created: 2021-05-02 02:56:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 273516d45eefa04e8b86f04ad940ebd2 SHA-1: 23ff01858cc91df75db93d75a14aa91d0c4b891c SHA-256: 5722f9daa251878b3f255c6d38e138ec5856ffffa4fd172912850da8596db264
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 embedded URLs suggest a phishing or malware distribution scheme, likely attempting to trick users into downloading a secondary payload. The PDF structure and embedded content are consistent with known phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607812a77ddea---suduzoz.pdf
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/bgm00hflo80hpnf9skb5jcoabf/84516607146.pdf
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1607eb636601a7---85392045411.pdf
    • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/48fde0c6f26ce0de403be577d704fcf8/vinowupu.pdf
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cf92fe8121---gunavowopirur.pdf
    • https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/036210a0adc652fe30358896cd43ef6f/11932081628.pdf
    • http://allnatureint.com/userfiles/file/gobopud.pdf
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086549b6b297---losevebeferolovifix.pdf
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/713da6177b58a80f6e51c22ab0764330/fomafujufedow.pdf
    • http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/16078e5bff1418---25036383793.pdf
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606f684f5db06---gusipafidoxeluwakudubo.pdf
    • https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/14ca5413cd7bee0032af832492916edb/zavawirazawowezanepuveja.pdf
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/04bces1q3e74njnfko6oi3u173/gopixexotuxevun.pdf
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/1608323f3e3dc2---41575183189.pdf
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/6dbmddbtfb1s5ef2bq3u0qm1v6/1642656069.pdf
    • http://ajtoablakcentrum.com/_user/file/35107882055.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=lodash+template+function
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d211.bin
2a42673f6cf7addaf4b1f5208f9b7f6fea4d260e5be2944df4e781982e62ab52		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD211 5240 bytes
font_01_sfnt_off0000e3c9.bin
ace3ae391a82424bbdb9a2e06837a7001ead8392e7ec7f8cc97340d5c1a9a794		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C9 11564 bytes

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