PDF malware analysis — malicious · af269e7e0259df8e

MALICIOUS

PDF

165.1 KB Created: 2021-12-01 15:11:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21

MD5: c250560e5796428df8c92de487e2395a SHA-1: 0397d903a7e4b68a6774511f4a30cfaac3a65576 SHA-256: af269e7e0259df8e35ff4a910542de972f0d128f45c0569e3c225d0dcce8e04f

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9609

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 http://kajo-frings.de/userfiles/file/nezub.pdf In PDF document text
- http://dongamold.com/fckeditor/upload_files/file/80848038915.pdfIn PDF document text
- http://csc-0411.com/userfiles/file/20211124125458_ixj0zu.pdfIn PDF document text
- https://holcom-solar.com/webroot/img/files/komaped.pdfIn PDF document text
- http://kondicionery-domodedovo.ru/upload_picture/file/705474111.pdfIn PDF document text
- https://self-storage.sg/images/uploadedimages/file/81794463958.pdfIn PDF document text
- http://cgpreceptor.com/ckfinder/userfiles/files/rutekodikuki.pdfIn PDF document text
- https://valeaflorilor.ro/img/uploads/file/fekugano.pdfIn PDF document text
- http://serenetour.com/image/upload/File/32571480461.pdfIn PDF document text
- https://kotypsy.pl/ckfinder/userfiles/files/kezisawegepinolalewosepi.pdfIn PDF document text
- http://domplus.su/userfiles/files/guwalinimujedetefi.pdfIn PDF document text
- https://toolsatool.com/userfiles/files/82820681871.pdfIn PDF document text
- http://masterref.ru/editorfiles/file/2675677948.pdfIn PDF document text
- https://grandplaza.bg/uploads/assets/file/5906479451.pdfIn PDF document text
- http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/16177a0b87aaf5---11238141863.pdfIn PDF document text
- http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/16199d8b4b4f9d---vobotojemobevipofabi.pdfIn PDF document text
- https://globalathena.com/ckfinder/userfiles/files/lemirofejitajurulami.pdfIn PDF document text
- https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/1617b6f4a9d8a6---23593823884.pdfIn PDF document text
- https://towa-aaa.jp/userfiles/file/426557326.pdfIn PDF document text
- http://nationalherbo.com/userfiles/file/batunefatizufuw.pdfIn PDF document text
- http://lerucherdesanges.fr/userfiles/file/34511164902.pdfIn PDF document text
- https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/uv7tgn6qrgldha3p86v7rqfti3/25497433088.pdfIn PDF document text
- http://feedproxy.google.com/~r/Xvkpad/~3/5bhJmFgkeCE/uplcv?utm_term=silah+modu+1.7.10PDF 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_off00022881.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x22881	10376 bytes
SHA-256: `70b4627da83e6d76425d392e32353ed6d5867780cbc4ddc268b424d4954e0a36`
`font_01_sfnt_off00023fec.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x23FEC	19212 bytes
SHA-256: `faa307784042ff1683dc2d801b8005d712ad044c2033cdd865fbb1e82558dfb8`
`font_02_sfnt_off00026f46.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x26F46	16416 bytes
SHA-256: `cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336`

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