PDF malware analysis — malicious · 4a520c174ec0ca04

MALICIOUS

PDF

85.1 KB Created: 2021-07-13 09:12:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15

MD5: 9791b76eab15b6f6a7dc7af074226480 SHA-1: 2e457ce6152030518c8c3894b715063bd1fb4745 SHA-256: 4a520c174ec0ca048ee8f412aee5edb7f3963f77bc621e0a7bd323f706728556

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous links, many pointing to compromised WordPress upload directories and disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of these links and the overall structure strongly indicate a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9860

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://mmszke.hu/files/file/4933825497.pdf In PDF document text
- http://wildpflanzen-planung.de/file/dejed.pdfIn PDF document text
- https://callhfelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e0cebb0efc0---nujagamitopapiju.pdfIn PDF document text
- http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073f50c978c2---furigala.pdfIn PDF document text
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9588ec5cf4---kugonite.pdfIn PDF document text
- https://dursunguney.com/userfiles/files/48913137786.pdfIn PDF document text
- https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/85318c7c7fb0914d15d1c864f31e52b6/vowenisagijewowadivegajon.pdfIn PDF document text
- http://kingsfinancialconsulting.com/userfiles/file/79019276118.pdfIn PDF document text
- http://ahlhy.com/uploads/file/011915203995.pdfIn PDF document text
- https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/5aa79a647709beb95696124fcf09296b/girowi.pdfIn PDF document text
- http://generaltubi.com/container/ckfiles/files/9155309523.pdfIn PDF document text
- https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e81360c3568---jedusiluvokenef.pdfIn PDF document text
- https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/50541e861ecf8f3af23c4bd6006e4423/24406336318.pdfIn PDF document text
- https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16078c7f9c16a5---pewezikaxakutifimujalafaf.pdfIn PDF document text
- http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160c5b78d6acb7---26434725142.pdfIn PDF document text
- http://szpital-sulecin.pl/images/fckfiles/file/xuliko.pdfIn PDF document text
- https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/03e2c04644cee48b4854756562ba6df8/21044379348.pdfIn PDF document text
- http://easternsheep.by/app/upload/file/37124909302.pdfIn PDF document text
- https://www.schroedersales.com/wp-content/plugins/super-forms/uploads/php/files/1d2e591bfe8ae3a8cb53d5891ae55ea5/mobinanajuwixidoz.pdfIn PDF document text
- http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/160b0e79a39e6d---senuwutatoge.pdfIn PDF document text
- https://sf-tfi-pgu.uz/wp-content/plugins/super-forms/uploads/php/files/f7bdb7a4350567f22c1757677c89aa62/zasawavaguzirupa.pdfIn PDF document text
- http://lncxjzxxw.com/upload_fck/file/2021-5-15/20210515033749293019.pdfIn PDF document text
- http://medob.org/SITE/files/editor/file/fozomironugutufudu.pdfIn PDF document text
- http://lordbeaverbrook1973.com/clients/76835/File/jaret.pdfIn PDF document text
- https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/eq9df1s9u4oeur2fgpqqo6rfnt/zuvibijamebejujidevusexa.pdfIn PDF document text
- https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/18aa40d892dba3545171c87bf81f63f5/porawitapopenubuno.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=height+weight+chart+12+year+old+boyPDF 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_off0000ea38.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEA38	10880 bytes
SHA-256: `a13c2ca644e14173b41e4df4d303ce03f1548270efba547a5632d82064c47e28`
`font_01_sfnt_off00010364.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10364	16584 bytes
SHA-256: `0c780acf832d4355a246685fc5a4a3d99778c54f2686126ef073002cdce6314f`
`font_02_sfnt_off00012ea1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12EA1	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

Open this report in the interactive analyzer, or submit your own file for analysis.