PDF malware analysis — malicious · 6089d182c68343bb

MALICIOUS

PDF

85.4 KB Created: 2021-08-30 08:55:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26

MD5: 91689c20fad91ad0f9d452aaf6b1ff12 SHA-1: aa64f86bfd998658c948717a4b5f59a071c35b02 SHA-256: 6089d182c68343bb3e20f42d932786f7a6f99481d0631c5762c97d71d96f6480

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains numerous external links, many pointing to compromised WordPress sites, suggesting a link farm or redirection mechanism. The PDF's structure and embedded links indicate an attempt to direct users to potentially harmful external content, aligning with phishing or malware distribution tactics.

Machine Learning

Nyx PDF Classifier malicious score 0.9974

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://drafthe.ru/uplcv?utm_term=how+to+remove+words+in+pdf PDF link annotation
- https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077002cdde82---patemowededof.pdfIn PDF document text
- https://avistravel.ro/userfiles/file/kosibuli.pdfIn PDF document text
- https://tlpnw.com/wp-content/plugins/super-forms/uploads/php/files/0b41e58d46064fe2f879667b50ff0c28/fukadolapejetamakanodi.pdfIn PDF document text
- http://bptramptour.pl/files/file/bobifojota.pdfIn PDF document text
- http://daiduongmetal.com/uploads/ckfinder/files/80901561575.pdfIn PDF document text
- http://islandpointfl.com/userimages/ketur.pdfIn PDF document text
- http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c8efc2cede6---rukozefezotu.pdfIn PDF document text
- http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16093bb6fb18dc---21582114656.pdfIn PDF document text
- http://at2apigroup3.com/contents//files/zapolefupetox.pdfIn PDF document text
- https://gencshow.com/upload/ckfinder/files/gowoxugedabisi.pdfIn PDF document text
- http://vankouwenenmastop.nl/UserFiles/file/30719942829.pdfIn PDF document text
- https://chsins.tw/uploads//files/202108092302121745.pdfIn PDF document text
- http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160882a9a4f6bf---78697175603.pdfIn PDF document text
- http://dgxzz.com/uploadfile/file/94111804469.pdfIn PDF document text
- https://safe-international.com/userfiles/file/78247619483.pdfIn PDF document text
- https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/09kj6mup75n3tpq4nkj4jevfsl/raletegejejunimi.pdfIn PDF document text
- http://www.derbysignandgraphics.com/uploads/file/muzolepivubanipo.pdfIn PDF document text
- http://soflcops.com/clients/83267/File/dosebetafofivogupikuris.pdfIn PDF document text
- https://hfdjet.com/wp-content/plugins/super-forms/uploads/php/files/0ee49aba5caebfee5eb5bb1185b6b49d/67757646168.pdfIn PDF document text
- https://zahnersatz.pl/userfiles/files/12563313752.pdfIn PDF document text
- https://rozgarnetwork.com/ckfinder/userfiles/files/tetomupugadi.pdfIn PDF document text
- https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/6pcopeq6j6bpa2gs0k631qcfmf/dunopex.pdfIn PDF document text
- https://abofahed.com/userfiles/file/16942154267.pdfIn PDF document text
- https://www.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/0cdff0ab04fbf0e86b6cadb0f65b3792/kenunutibibalel.pdfIn PDF document text
- http://verkoop-je-wagen.be/wp-content/plugins/formcraft/file-upload/server/content/files/160838272c0367---53209888001.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_off0000e9f3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE9F3	10596 bytes
SHA-256: `8289fb754fbdd428fbdf119027d24ee4acbfbc372859f93156132b1e7e788bea`
`font_01_sfnt_off00010222.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10222	17732 bytes
SHA-256: `6d06047a596f4fcac4aa530b063b469ed4352fcf601405d2ec360cfd55d8f1cc`
`font_02_sfnt_off00013007.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13007	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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