PDF malware analysis — malicious · 4e31a0a54a49ebf7

MALICIOUS

PDF

83.2 KB Created: 2021-07-25 08:52:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19

MD5: fc7e661623fb342deaae8b375eae2481 SHA-1: c17bfdf2da3b096744c01a09373f4d51a505cabf SHA-256: 4e31a0a54a49ebf79934f21a1ee66664843d627defb050b7735e7fe22c2f03c3

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9944

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://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/160783db5962dc---80230805481.pdf In PDF document text
- https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/16070f71f5dc46---xitujowadabigi.pdfIn PDF document text
- http://thomasbelldescendants.com/clients/40432/File/bikanepoguson.pdfIn PDF document text
- https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/ffaf85d39a2113a26f4deb3ae079fa76/96257675053.pdfIn PDF document text
- https://spacio.hk/attachment/file/jepolufurojofu.pdfIn PDF document text
- http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b38067c9647---2201258825.pdfIn PDF document text
- https://outsourcedbackoffice.co.uk/wp-content/plugins/super-forms/uploads/php/files/b3934e40497fa9c0703a787ae9f34dd7/26297336860.pdfIn PDF document text
- https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d5485d6da26---rijolofipoba.pdfIn PDF document text
- http://mayfamilycircle.com/clients/5/53/53cd9f4101e72b768929e5daf979c2da/File/88434221105.pdfIn PDF document text
- http://commandhousecreations.com/uploads/files/13158707250.pdfIn PDF document text
- http://spreewaldatelier.de/img/editor/file/53127447432.pdfIn PDF document text
- http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160b7fdfecae2b---57090229042.pdfIn PDF document text
- https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/d68c8313fe51a59552154de8b9c3ea54/lefomitumodelawuwuk.pdfIn PDF document text
- http://www.cenlajobinator.com/siteuploads/editorimg/file/90538039360.pdfIn PDF document text
- http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160789b180fd20---20463509019.pdfIn PDF document text
- https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/160840b27cdb06---53526586289.pdfIn PDF document text
- https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/fd6c0cb740237730d37e5ec95fef57bc/jejirefivevupijalex.pdfIn PDF document text
- https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/2f4ada48386e3f8fab087bc00be23c9f/rodunurativukoxozenuzad.pdfIn PDF document text
- http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/9f9079fd9cb269b8047325acc3992eeb/95821785389.pdfIn PDF document text
- http://blpest.com/UserFiles/file/65510497733.pdfIn PDF document text
- https://unique.global/wp-content/plugins/super-forms/uploads/php/files/7b6c1899037513165b069eee99f2290e/namezitomegakes.pdfIn PDF document text
- https://studio45.live/wp-content/plugins/super-forms/uploads/php/files/09jkl6eb9j7em5aqlq0civ0b75/ludexeburexemagu.pdfIn PDF document text
- http://bjallstar.com/upload/file/46417699481.pdfIn PDF document text
- https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/e4f9e58e4af8fd56acfe45315f1146c5/37760703280.pdfIn PDF document text
- http://studiosiciliani.eu/userfiles/files/62872362233.pdfIn PDF document text
- http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fe28074cb3---99961218029.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=8+ball+pool+easy+cash+mod+apk+long+line+anti+banPDF 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_off0000e0be.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE0BE	11320 bytes
SHA-256: `91cc2740cd42c40cbc4b4d58d5615954296a6a9de120ac5f158c450d79288d77`
`font_01_sfnt_off0000fabf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFABF	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off000112d1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x112D1	16756 bytes
SHA-256: `a9ec931c802e09379f256d9263a56a987bc61a0baa4ac0a18e89f706baa95659`

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