PDF malware analysis — malicious · 369d8f3e8cf56035

MALICIOUS

PDF

77.9 KB Created: 2021-08-17 06:29:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26

MD5: ee2d0361467d9d9f49d36c26c6c813f4 SHA-1: ff1fc0947cbc2e7cdff43d12db2bc059919d360e SHA-256: 369d8f3e8cf5603511cc496c295253ae0261e35b37fea03723c1102d89cffcbd

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicate a high probability of maliciousness. It contains numerous links, many pointing to compromised WordPress sites, suggesting 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 0.9973

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://cructi.ru/uplcv?utm_term=how+to+reset+my+genie+garage+door+remote PDF link annotation
- http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1610c52f7ad865---28393874710.pdfIn PDF document text
- https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/c14353a5803ce5991305d419652d2a55/xemimovisefarokoboreniza.pdfIn PDF document text
- http://zrdb-drogbud.pl/Upload/file/95233340205.pdfIn PDF document text
- http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ccc4cf02f91---begosuxinaxanaf.pdfIn PDF document text
- http://saludocupacionalpso.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/16111c46c6b5f6---suvifagisusijaxalawodas.pdfIn PDF document text
- https://creteotels.gr/FCKeditor/userimages/file/zelok.pdfIn PDF document text
- https://stpeterscbs.ca/ckfinder/userfiles/files/43707346426.pdfIn PDF document text
- https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609104a711872---zisikagikewemuwix.pdfIn PDF document text
- https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ee07273d110---bupebu.pdfIn PDF document text
- http://burchiellati.com/file_fck/file/robudilujofunavuvowuvisus.pdfIn PDF document text
- http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/gc5jtn1v66f1aj2q6bc3v3edf7/mexob.pdfIn PDF document text
- https://cochleartudaskozpont.hufiles/96464927842.pdfIn PDF document text
- https://shayangroup.net/wp-content/plugins/super-forms/uploads/php/files/6efb3fec2ba3fe1d8f4f3bd1d9f4f32d/31577795079.pdfIn PDF document text
- http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607b035f914c8---72006499064.pdfIn PDF document text
- http://studiocalderini.it/userfiles/files/mebosijoxoka.pdfIn PDF document text
- http://tamilannuaire.com/var/www/vhosts/vps296430.ovh.net/tamilannuaire.com/images/file/lojigawafutekinuzonuxu.pdfIn PDF document text
- https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c327222e1b---zorogijesivunojebumamima.pdfIn PDF document text
- http://maximaviajes.com/FCKfiles/file/tawupan.pdfIn PDF document text
- http://bfr-bialapodlaska.pl/userfiles/file/jatesutiguzuwodojigixipip.pdfIn PDF document text
- https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/9735bbb9e85b8b8ea15c798c302c0bb0/dilifusezeta.pdfIn PDF document text
- https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/160bb6dd3a2202---64692652265.pdfIn PDF document text
- http://al-bandak.com/userfiles/file/nixeperokutopojotuwo.pdfIn PDF document text
- https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611b1dc18d02c---doxulolomuwa.pdfIn PDF document text
- https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/ptv5pt660endf3cibfo03c9lfe/vijozatogepokelebazatob.pdfIn PDF document text
- http://bahtiyardishekimi.com/fckfiles/file/wijinekegileluj.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_off0000cd6c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCD6C	10736 bytes
SHA-256: `1eb081b5ffd3f4637f9d93455ea23c7600f819c972cae04e20500e8919ff92e5`
`font_01_sfnt_off0000e5f8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE5F8	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0000fe0a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFE0A	16264 bytes
SHA-256: `b9610176ed1388ff3f0d93cd7afbb85843067ebee5097c43fbabeb169f6f7466`

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