Malicious PDF — malware analysis report

Static analysis result for SHA-256 924826b22493b9df…

MALICIOUS

PDF

70.1 KB Created: 2021-05-18 07:43:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f27599f1e5d1b8146fd6b695d8d24ca7 SHA-1: af4c147bfba7d3af519c942c02552d6e638b1f84 SHA-256: 924826b22493b9df4472ddef49a0d8e91eb124cc61b5ae45bcfcff8febaf939f
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting it functions as a link farm or a distribution point for further malicious content. The presence of embedded URLs and the overall structure point towards a phishing or malware delivery scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://philabc.ru/uplcv?utm_term=calendario+biodinamico+2020+pdf+gratis
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160719773da5c3---96966912968.pdf
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16097e0d1bda43---sevalasosoboronuvotali.pdf
    • http://www.esthemed.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1608d9eec04ff7---zijuwasuvore.pdf
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609dd0f0870d6---34011062581.pdf
    • https://fastcomputer.vn/wp-content/plugins/super-forms/uploads/php/files/e752f5a4a96ded4508a82c8415ad6838/30209544815.pdf
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/u9tcvdsuc161sfsvdtrmcmpjud/fiwajeno.pdf
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/267f9af63df3bca50ec71bb145cf7047/29253900409.pdf
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/56a009a29ac564e80d884737baac3f85/rasabekunapevatixif.pdf
    • https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/408165e47f182f0b71a755f1bcf9b0e8/razefarusawetuvofab.pdf
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ea8e0e3a63---39209100517.pdf
    • https://opuntia.eu/wp-content/plugins/super-forms/uploads/php/files/81f031021e95da47d2def834fb78b32e/xizovasaz.pdf
    • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/ff0780439a439f7b5e0ae5a624ec9dc7/85067678493.pdf
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/46f4dlecljbre2e6d9ucqisoit/xumokivotakaxekipinisup.pdf
    • http://ekolojikweb.net/upld/userfiles/file/xakuvabemetukonepojemek.pdf
    • https://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/16081b614dff85---gifozojigukojagenelad.pdf
    • https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/ee04d646220de1893c489dc048db9143/39794562388.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off0000d307.bin
e68b4a5e84da3b2988a548a1e0e195f3727a307aeec326d5d65b02fb8fb8bac5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD307 5796 bytes
font_01_sfnt_off0000e6a0.bin
fb161e9bdc80f9431eb71abf35102a05dffc57fe4aa5ca0a22445fb0f75be6f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A0 11204 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.