Malicious PDF — malware analysis report

Static analysis result for SHA-256 67c6ea61041f15e6…

MALICIOUS

PDF

97.5 KB Created: 2021-07-10 06:02:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: b0b6147d9a5e7a5ed2b5a89f147eaedd SHA-1: 1698addd5370f3de5a10f844a52e77b2f76d6dc5 SHA-256: 67c6ea61041f15e6565288f5a9d3432127fbcf01d3c4576639f5243cbb001d25
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. It contains a link farm with numerous URLs pointing to compromised WordPress upload directories, suggesting it is used for phishing or malware distribution. The presence of multiple distinct hosts and the use of disposable hosting indicate an attempt to obscure the true origin of malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9932

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16087918c000e8---goviseropugijepuxezupobeg.pdf In PDF document text
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbd3fd3116---6801887490.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160854fed8d445---fopatedorogosuleruvupo.pdfIn PDF document text
    • http://progfin.pl/userfiles/file/zoboxejixaj.pdfIn PDF document text
    • https://weeb.nu/userfiles/file/21587756942.pdfIn PDF document text
    • http://gzmzwl.com/Uploadfiles/files/84302911909.pdfIn PDF document text
    • https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/pvom9sh1l8kh5t9oh8levv2kiq/77366848325.pdfIn PDF document text
    • https://lightsourceindiana.com/wp-content/plugins/super-forms/uploads/php/files/66551a133d465f098c342cf06aad075d/68619710666.pdfIn PDF document text
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/1606f423e3cd82---6988433485.pdfIn PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/28hf6ia01cn00d28it70clgnrv/65334834814.pdfIn PDF document text
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/85e88404ab37643127f45d09e360f7c4/fewozilib.pdfIn PDF document text
    • https://africanresearchcenter.com/userfiles/file/mexasujonunaw.pdfIn PDF document text
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609aa412a4b33---66120428923.pdfIn PDF document text
    • https://www.idahomedia.com/wp-content/plugins/super-forms/uploads/php/files/548669be4e578074417074c8a1424ce8/85632047959.pdfIn PDF document text
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/283ef09b2df634e2738f34099716a6bb/62413333630.pdfIn PDF document text
    • https://technische-dokumentation-hoffmann.com/upload/files/45704706126.pdfIn PDF document text
    • http://benhvienlaptop.biz/userfiles/file/72530982091.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/f3df5bb75c95e53ec7dcbb427df5f2f3/57865967812.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc1f31165c---71002486774.pdfIn PDF document text
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/89fe3e25ecf178819ab65fbbafdad900/tamifape.pdfIn PDF document text
    • https://yuss.it/file/tasid.pdfIn PDF document text
    • http://webhenevents.com/clients/868374/File/jupetelesobuwonape.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=marquess+of+milford+havenPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2BC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010acd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ACD 17148 bytes
SHA-256: cdeb96dc7004962eb911c2c89b7aa8ec34cfe1efc04350f4154d5fcb99d3a399
font_02_sfnt_off00012407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12407 10828 bytes
SHA-256: 9ae092fdf40f589387b6007e56ea28fbd5ea364e23dda090fd1a4a22661e3b00
font_03_sfnt_off00013c8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C8E 22816 bytes
SHA-256: 161465d7a8d9514ad762c22433412a739eb3f81f2f91b225c57a8d75c96e7075

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