PDF malware analysis — malicious · f2fb7677b1ec0dd8

MALICIOUS

PDF

69.8 KB Created: 2021-10-03 03:25:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-13

MD5: 8cf41cc67cb046b0606c7663ff0870b3 SHA-1: 49d26b4bcb1297f971c6e857c84be1f6b1b7e384 SHA-256: f2fb7677b1ec0dd89cb32dd10c7e0c0bfb4c01b36ccf35a93c97b0297672df07

126 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9975

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://krisoc.ru/uplcv?utm_term=arbitration+conciliation+and+alternate+dispute+resolution PDF link annotation
- http://hightopeducation.com/cms_uploaded/file/3417513771.pdfIn PDF document text
- http://tnshoppingbag.com/upfiles/file/zofinexagavegukenezu.pdfIn PDF document text
- http://jj-metals.com/userfiles/file/2021090423192473499.pdfIn PDF document text
- https://retrofitoman.com/ckfinder/userfiles/files/zozumuvolorevagujoz.pdfIn PDF document text
- https://tlproduct.com/userfiles/file/6201601068.pdfIn PDF document text
- http://iltorg.ru/upload/file/93157125870.pdfIn PDF document text
- http://juicy-group.com/editor_upload_image/file/50665696790.pdfIn PDF document text
- https://ap-qatar.com/userfiles/files/nagixomevejaxodaf.pdfIn PDF document text
- http://zhengfutz.com/v15/Upload/file/202194153133227.pdfIn PDF document text
- http://esipro.lu/userfiles/file/paxusebom.pdfIn PDF document text
- http://scenekunstskolen-efteruddannelsen.dk/ckfinder/userfiles/files/funuvejobofija.pdfIn PDF document text
- http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16143be128ce79---buxalimanemutekobibaz.pdfIn PDF document text
- https://psychologgia.pl/Upload/file/12832077865.pdfIn PDF document text
- http://dalnoboy.org/data/filestorage/upload/files/31030974240.pdfIn PDF document text
- http://westernmaki.com/uploads/files/25758417821.pdfIn PDF document text
- https://pt-lb1.pasarantogel.com/contents/files/gojaruzewa.pdfIn PDF document text
- https://rjpexport.com/files/74025511067.pdfIn PDF document text
- https://bushregenerators.info/userfiles/files/88733837774.pdfIn PDF document text
- https://treasurehunterdetectors.com/ckfinder/userfiles/files/6008172132.pdfIn PDF document text
- http://xn----ctbguteehkho5h.xn--p1ai/ckfinder/userfiles/files/70244201560.pdfIn PDF document text
- http://yuanyoujie.vip/userfiles/file/81223507075.pdfIn PDF document text
- https://ms02bet.net/contents/files/watofeli.pdfIn PDF document text
- https://aydin-elektrik.com/resimler/files/judetoputarip.pdfIn PDF document text
- http://timebymtm.com/upload/files/potuzapo.pdfIn PDF document text
- 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_off0000b2c0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB2C0	14856 bytes
SHA-256: `c5eec3bba051413ab5dad01b8f23fcdfe81a8a00de5f5b20c4d3eceb756e91e8`
`font_01_sfnt_off0000d81f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD81F	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0000f036.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF036	10728 bytes
SHA-256: `6adadaba0e097fe8ac966590f5e2d7cfc7a5c94bc1f8f3fa20d35b0067b0cbe8`

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