PDF malware analysis — malicious · 72b137091e8cbb4f

MALICIOUS

PDF

68.1 KB Created: 2021-09-28 12:05:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28

MD5: d9a8386b66b4324c0e2ee687c6292065 SHA-1: 37694806c728a131ef24f1691e5807abd15a2b04 SHA-256: 72b137091e8cbb4ff21f67c7c2132b2005ef11095a2fe02f53ca8223dafcf09f

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9966

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://qapoll.com/2015/vat/upload/files/19944486452.pdf In PDF document text
- http://peak-experience-japan.com/images/blog/file/84095158303.pdfIn PDF document text
- https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/16136b7a950bae---76590846849.pdfIn PDF document text
- http://www.dogwoodagility.nl/ckfinder/userfiles/files/dobubez.pdfIn PDF document text
- http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16134063c7f209---pukusebumupup.pdfIn PDF document text
- https://inprovitecuador.com/ckfinder/userfiles/files/35023267437.pdfIn PDF document text
- http://metzgerei-bischof.de/userfiles/file/40335170132.pdfIn PDF document text
- https://dondepodemosir.com/userfiles/file/14912390174.pdfIn PDF document text
- http://accutindustry.com/Upload/files/20210927145255.pdfIn PDF document text
- http://monteconsultants.com/image/upload/File/23908583339.pdfIn PDF document text
- http://www.ecrivains-consult.fr/easyonline/ckfinder/userfiles/files/22504479507.pdfIn PDF document text
- http://jornalespacoaberto.com/app/webroot/datafiles/editor/files/51825209557.pdfIn PDF document text
- http://www.mousumibanerjee.com/fckimages/file/24382837352.pdfIn PDF document text
- http://strandedtattoo.com/file/gajitofevumawamupipo.pdfIn PDF document text
- http://drukarnia-skawina.pl/app/webroot/media/files/83196192923.pdfIn PDF document text
- http://laduses.nl/image/file/60383883075.pdfIn PDF document text
- https://nhatngudongkinh.com/upload/ckupload/files/46035912165.pdfIn PDF document text
- https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/309d6641cf5c8ec7f46e45a510cad411/52773819660.pdfIn PDF document text
- https://estudiowebcolombia.com/ckfinder/userfiles/files/91511215939.pdfIn PDF document text
- https://glbtrader.com/userfiles/file/65626042700.pdfIn PDF document text
- https://atlanticcompact.org/userfiles/files/64574891255.pdfIn PDF document text
- https://doucetplasticsurgery.com/ckfinder/userfiles/files/68511717427.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=android+11+in+mi+a3PDF 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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000adbe.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xADBE	10172 bytes
SHA-256: `999b461e4be6f2bc2f1d2e819375bb1704794ce9937cdab5865a64a0a99ecc2a`
`font_01_sfnt_off0000c471.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC471	15364 bytes
SHA-256: `d039b37a418755311b59f65acc2ee77b0bc5f29ea95b5bbc2b3b8529b3bca6b4`
`font_02_sfnt_off0000eba7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEBA7	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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