MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics suggest it functions as a link farm, with many URLs pointing to compromised WordPress sites and disposable hosting, likely serving as a lure for phishing or malware distribution. The presence of invoice-related language further supports a social engineering pretext.
Machine Learning
- Nyx PDF Classifier malicious score 0.9820
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF 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.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall 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.
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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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://nomylo.ru/uplcv?utm_term=lean+startup+business+model
- http://kolasinprevoz.rs/slike/files/90667451647.pdf
- http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/160823b56203b3---69613616991.pdf
- https://flardochform.se/userfiles/file/61862916631.pdf
- http://rencontres-icare.org/userfiles/file/kalozasi.pdf
- http://dalaichau.com/files/nenalanejo.pdf
- http://saptpadi.com/files/file/39411436935.pdf
- https://jclifeschools.org/wp-content/plugins/super-forms/uploads/php/files/b437f9388a94aeb43f05f283b628e940/1828508499.pdf
- http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af90bcd50cb---sokokapikomonosamedofori.pdf
- http://c-amc.com/upload/files/jinavagobomewaj.pdf
- https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/160760b795f8a3---buwotijibo.pdf
- http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/dttv2fkmh4oebmvmksqq2chn61/89473894835.pdf
- http://www.bash.cl/media/file/45504743512.pdf
- http://frezerovka.by/images/fxeditor/file/xotogubenij.pdf
- https://arhometutor.com/userfiles/file/29602927813.pdf
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a1a2cc3389a---vejamivunaregokoxabebur.pdf
- https://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608be97f889e6---fenisibeziludinugamokarol.pdf
- http://agrobud.net/uploaded/file/wakinexubiwixetaregisegin.pdf
- http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160a9b4dea7d91---61117516229.pdf
- http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f60914f7a4---10791365628.pdf
- https://xn--80aaa1arbfjoe3bzh.xn--p1ai/data/files/tetolujitozukugufukirada.pdf
- http://homelife-superstars.com/image/files/49077552714.pdf
- https://thehero88vip.com/ckfinder/images_store/files/jovabilalubemirapevedudi.pdf
- https://www.aceitedeoliva.com/wp-content/plugins/super-forms/uploads/php/files/364fc2e35dac6c2d32c47076b1a10158/79204247497.pdf
- https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607e790b1a328---10364025424.pdf
- https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/3f63017bbe33f93086bfdb4568316811/nizuxalo.pdf
- http://steps4cancer.org/clients/a/a7/a78c374070a178914b502abaf3db82b8/File/kakosunapewusojo.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00011134.bin463e1e0f77e7bc6853e4052969f4c8550fba59cdd0d1a512edbf2d62a5dd07f2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11134 | 16548 bytes |
font_01_sfnt_off00013c3f.bin99a75207afe62805e459e4ea54300f2973700b4dad5087eda7599fffb30b1e11 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13C3F | 10748 bytes |
font_02_sfnt_off000154ac.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x154AC | 16792 bytes |
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