PDF malware analysis — malicious · 808a5b4c65322f0b

MALICIOUS

PDF

78.2 KB Created: 2021-06-30 03:46:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20

MD5: 216ac16d3d92d7c475a106aa9edd2ded SHA-1: b57eb171b760b22f1d109623d2856007c593c73c SHA-256: 808a5b4c65322f0bf8aaabcbed3f305a4ba8fdfb50aa80d035b5171e8f5cc69e

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting it's part of a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9949

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://ketchas.ru/uplcv?utm_term=indian+bank+gold+loan+interest+rate PDF link annotation
- https://reflexlighting.com/wp-content/plugins/super-forms/uploads/php/files/c91da63e55d212ed254a1e62eb84b218/95257486311.pdfIn PDF document text
- https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/ofo4igbjd7eiu31ani7eg4uas6/wivixutisosebagovikuto.pdfIn PDF document text
- https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/aa4246203e52c5786c85407a26b3e2f2/32539083389.pdfIn PDF document text
- http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607642a8f1708---dusedowutijixalegojar.pdfIn PDF document text
- http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9752acef59---70806826061.pdfIn PDF document text
- http://ezibra.pl/upload//file/49638160511.pdfIn PDF document text
- https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/dfe6016ce7927fa122a6d2003265e89d/gasevijewusoxewubavalaki.pdfIn PDF document text
- https://actioncoach.com.my/wp-content/plugins/formcraft/file-upload/server/content/files/160a4972cb6af9---joxizipig.pdfIn PDF document text
- http://pocatellocampfire.com/wp-content/plugins/super-forms/uploads/php/files/th9hlnopmoa6cj7t04lhhsp3lv/44737735747.pdfIn PDF document text
- https://mobistore.co.nz/wp-content/plugins/super-forms/uploads/php/files/29dcfe2f764a24c4ba363ce9a540fd6e/15644831738.pdfIn PDF document text
- https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/885f1ece4dcbaca6d5b3f454adc8cf1e/32203007071.pdfIn PDF document text
- https://landbondcorten.com/attachment/file/835d98da584effc89ebc54eed078609b.pdfIn PDF document text
- https://northcoteplaza.com/userfiles/file/58798735792.pdfIn PDF document text
- https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/2c0m1lorsgk1krm92iilugrej6/tibitubuvabol.pdfIn PDF document text
- https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/a1e9ef4b56327b65c9ce16daa52c4d12/zejisamisogereka.pdfIn PDF document text
- http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/160705439464ad---33850052574.pdfIn PDF document text
- https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c95af4e7926---fegizokewedanajinizaxam.pdfIn PDF document text
- http://lawyerstitleescrow.com/clients/9/9b/9b7cfcecb5e5abb6b877b2b1d59b4eb1/File/jukamokodevuzejeto.pdfIn PDF document text
- https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a258b988696---togemojepubagoxadida.pdfIn PDF document text
- http://xiaohecollege.com/d/files/63036472126.pdfIn PDF document text
- https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6aeb36e150---31460169219.pdfIn PDF document text
- http://vitanova-cattery.com/upload/file/89020779534.pdfIn PDF document text
- http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a3b35a17e8b---9867913261.pdfIn PDF document text
- http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/6tlsu8t82ftvd6ueu5m3bh4eg1/jumupekakalapudugas.pdfIn PDF document text
- http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/160969b88c639d---wolutikidiveti.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_off0000d184.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD184	10608 bytes
SHA-256: `010e16926ebc72f9366d2afd563c88098262ddcf1d4a5ccd69ea8be28fc842fb`
`font_01_sfnt_off0000e9a1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE9A1	16192 bytes
SHA-256: `6eb3c2c665d4f03b2171e29dd11d5e076ac782111ffe905bdde58bf0fd2726b9`
`font_02_sfnt_off00011379.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11379	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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