PDF malware analysis — malicious · 1fc921a7644fff6c

MALICIOUS

PDF

80.4 KB Created: 2021-07-03 00:17:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23

MD5: 4354cfb50c693874a46bf790613ce896 SHA-1: 3bacbc712c87a2f52a5d2c77d843b7777cb1df57 SHA-256: 1fc921a7644fff6cf1da74986dfdc11e9b0567ec27c36154fa7631eb5bd53d33

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file contains a link farm pointing to multiple compromised WordPress sites and disposable hosting domains, suggesting an attempt to distribute malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a malicious intent. No scripts were extracted, but the presence of numerous external links indicates a phishing or malware distribution lure.

Machine Learning

Nyx PDF Classifier suspicious score 0.4210

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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
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://allytemp.ru/uplcv?utm_term=gameboy+advance+free+download PDF link annotation
- http://mvclassof1990.com/clients/8/8c/8ca0ba2c7a07c5cd1f21f9fc323c16c5/File/65941427331.pdfIn PDF document text
- http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cab1b5cd94---batetopudixulololax.pdfIn PDF document text
- http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c34a372009a---sisujofexamijulomig.pdfIn PDF document text
- http://geyikkimya.com/userfiles/upload/file/50372816471.pdfIn PDF document text
- https://myarchitect.es/ckfinder/userfiles/files/43169410419.pdfIn PDF document text
- https://xn--arbeitskndigungsrecht-best-5zc.de/userfiles/file/88959928620.pdfIn PDF document text
- https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/e9381698330fc6fafce723f93afe4def/70863443863.pdfIn PDF document text
- https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/d4549de82bd25b23a37575f9fdb10d03/wexudujutalalovagudugas.pdfIn PDF document text
- http://mtcclassof81.com/clients/0/0a/0a45bd3013a8cc77df817aa526a911b1/File/58551550065.pdfIn PDF document text
- http://aydinservis.com/ckfinder/userfiles/files/nijunerenumijuzixofifi.pdfIn PDF document text
- http://aaaexpressheating.com/userfiles/file/murutolukigowuzod.pdfIn PDF document text
- http://allmedicus.com/userfiles/file/webilij.pdfIn PDF document text
- http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/1tkqmgmm7sa6bldkhse1ib6661/24732652737.pdfIn PDF document text
- https://anpheatingandac.com/nbloom/fckuploads/file/kakuzonaxalijirojep.pdfIn PDF document text
- https://ovistar-dz.com/ckfinder/userfiles/files/nuzenapivit.pdfIn PDF document text
- https://urbanplace.me/wp-content/plugins/super-forms/uploads/php/files/d5e65f2aeddb58b430976d944cceb40d/polinok.pdfIn PDF document text
- https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/la4n4da3r9uhhj7av7bsdmu0m1/sesoxid.pdfIn PDF document text
- http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16088671f6b06b---56912719605.pdfIn PDF document text
- http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a348df0e2d7---30769072870.pdfIn PDF document text
- https://gbagencement.fr/uploads/file/92574000730.pdfIn PDF document text
- http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6e49eb6071---rovabamibolelapakag.pdfIn PDF document text
- http://bhk-aindling.de/userfiles/files/39943106335.pdfIn PDF document text
- http://csc028.com/userfiles/file/20210701191231_7sbdiz.pdfIn PDF document text
- https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/f012ebe5152b7330668dbf59a6624907/kateborejulekunukavena.pdfIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f5db.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF5DB	10724 bytes
SHA-256: `5cd1cbb05d1a269cb09ae1630ac9d3af5631414d5e5f6d4841821e5fb9481496`
`font_01_sfnt_off00010e89.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10E89	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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