PDF malware analysis — malicious · 05bd610de0f05489

MALICIOUS

PDF

85.2 KB Created: 2021-09-12 02:00:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24

MD5: 7e472f55937d468037fa1dca86d1f537 SHA-1: 3e9bbba3e9f57097e9cb9c42240d5cb96452991b SHA-256: 05bd610de0f0548935814cb0df01ed5e870e682e821fbfb40b26fa3209f932fc

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded URLs, many of which point to compromised or disposable hosting sites. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a malicious intent, likely to lure users to phishing sites or download further malicious content. The presence of a link farm on potentially compromised CMS upload storage further supports this assessment.

Machine Learning

Nyx PDF Classifier suspicious score 0.3358

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
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 http://zkqzl.com/uploadfile/file///2021091203264080.pdf In PDF document text
- http://assytekservizi.com/userfiles/files/35702316372.pdfIn PDF document text
- http://fotofolliasanlazzaro.it/userfiles/files/55305526056.pdfIn PDF document text
- https://eol.org.pe/ckfinder/userfiles/files/47012584569.pdfIn PDF document text
- http://clearspace-design.com/CKEdit/upload/files/62852255168.pdfIn PDF document text
- https://www.sibirprokat.ru/ckfinder/userfiles/files/3616826226.pdfIn PDF document text
- http://nirmalapublicschoolerumely.com/userfiles/file/76454625007.pdfIn PDF document text
- http://hanlacsclub.com/ckupload/files/60203163771.pdfIn PDF document text
- http://yourhandmadeitems.com/userfiles/file/turunukowikoji.pdfIn PDF document text
- http://fc-junajted.com/upload/datoteke/gifejuzepenekumizul.pdfIn PDF document text
- https://deewo.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613aa2babf17b---28091154624.pdfIn PDF document text
- https://hung168.tw/UserFiles/files/13736778603.pdfIn PDF document text
- http://gptools.net/userfiles/file/32730037528.pdfIn PDF document text
- http://bpsstudio.hu/uploads/49733432584.pdfIn PDF document text
- http://finadev-groupe.com/userfiles/file/35034543386.pdfIn PDF document text
- https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/dba0de84e28e6244e46dd88e220836c1/63699736164.pdfIn PDF document text
- http://soles2walk.cz/data/file/69466352005.pdfIn PDF document text
- http://ooexperience.be/assets/Image/files/31143167986.pdfIn PDF document text
- http://apicn.net/upload/files/gilub.pdfIn PDF document text
- https://ags-car.60km.com/upload/files/90164906614.pdfIn PDF document text
- http://rurisnet.org/images/file/kaboxu.pdfIn PDF document text
- http://dfanchem.com/upload/files/likolopirutimeweseki.pdfIn PDF document text
- https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/6ebpn2dfj3rku7kapd8i4a24c3/14963858940.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=recovery+road+book+pdfPDF link annotation
- 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_off00010745.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10745	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off00011f5c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11F5C	10560 bytes
SHA-256: `6d9e2c4bb4750be59fcac8358de2a6dfcc1fa222566118bad08279001a24bd8e`

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