PDF malware analysis — malicious · 7939e8296596a52a

MALICIOUS

PDF

81.8 KB Created: 2021-10-20 21:05:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15

MD5: c1d5bb99d8ff71b991142344779df31c SHA-1: 5874ef02b0874cf4c94b8c3f402cdc701da33732 SHA-256: 7939e8296596a52a52994c674e710899880fb3e336f488d4242cb748420b35f7

156 Risk Score

Machine Learning

Nyx PDF Classifier malicious score 0.9974

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://vcubusinesssolutions.com/userfiles/file/gijezopuveripu.pdf In PDF document text
- https://kurishupally.org/userfiles/file/41353165307.pdfIn PDF document text
- https://marlschuz.com/userfiles/files/fafapapunipevaw.pdfIn PDF document text
- http://zhongjiukeji.com/upload_fck/file/2021-9-4/20210904015417498131.pdfIn PDF document text
- https://fobh.net/userfiles/files/44960709174.pdfIn PDF document text
- http://nilesk.com/userfiles/file/dupamimofadapoxo.pdfIn PDF document text
- https://karatenarrewarren.com.au/ckfinder/userfiles/files/fukuwodekuga.pdfIn PDF document text
- http://benedictinoselrosal.org/ckfinder/userfiles/files/17913439248.pdfIn PDF document text
- http://artospace.com/pics/file/69872864763.pdfIn PDF document text
- http://ecohort.com/userfiles/files/94900079205.pdfIn PDF document text
- https://toptenstudy.com/upload/files/BodyFile__61701A32ADD52.pdfIn PDF document text
- http://akiisushi.com/uploads/files/97842792662.pdfIn PDF document text
- http://waterlootour.com/FileData/ckfinder/files/20210917_85A81F16A7BCDB3F.pdfIn PDF document text
- https://seedcambodia.org/htdocs/cljr/data/files/kiwurunuwonaxafuwo.pdfIn PDF document text
- http://firesecurity.sk/userfiles/file/4813165553.pdfIn PDF document text
- http://thermcom.cz/userfiles/file/11591174591.pdfIn PDF document text
- https://chokysitohang.com/Uploads/userfiles/files/lotijukevuwejaf.pdfIn PDF document text
- http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161472a0e7bc98---nibopukozozafexevi.pdfIn PDF document text
- http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613927799d676---zorelabowalixibe.pdfIn PDF document text
- http://homelife-superstars.com/image/files/zixebumixegokebatep.pdfIn PDF document text
- https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1616175a1dd9a5---33850985361.pdfIn PDF document text
- http://chinastom.ru/userfiles/file/61593313038.pdfIn PDF document text
- https://sarenpinler.com/calisma2/files/uploads/bokexulemusefogu.pdfIn PDF document text
- https://reazfarah.com/ckfinder/userfiles/files/lojezipexofepewurine.pdfIn PDF document text
- http://feedproxy.google.com/~r/Xvkpad/~3/UsNeCLCzgYg/uplcv?utm_term=christian+living+in+the+home+pdfPDF 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_off0000dbf8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDBF8	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000f40f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF40F	11040 bytes
SHA-256: `628d9d9eb1b6ec56a1a6fceb44db4ba5f5fe7a68858337488f8084ff790dad56`
`font_02_sfnt_off00010d65.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10D65	17164 bytes
SHA-256: `07d190f1e79c5fc98c13e0e2899b49d7d593604048296fc9cee574056a7cf3d0`

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