MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains numerous embedded URLs, many of which point to compromised CMS uploads or are part of a link farm on disposable hosting, suggesting an attempt to lure users to external sites. The presence of external URIs and link farms indicates a phishing or malware distribution vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
Heuristics 6
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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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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://crewmak.ru/uplcv?utm_term=samsung+s20+5g+vs+iphone+11+pro
- http://polenes.cl/userfiles/file/fapatefugejaluku.pdf
- http://baohanhranghm.com/upload/img/files/89811370579.pdf
- http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a4a6d11fbf---sumijo.pdf
- https://sabunwangi.com/contents/files/mudeka.pdf
- http://tauroconsulting.pl/userfiles/file/sujewikozowozefunifikove.pdf
- https://nedimgame.com/calisma2/files/uploads/88162095143.pdf
- http://solemarservizi.it/userfiles/files/54161746360.pdf
- https://lrsdev.com/userfiles/file/65310539959.pdf
- https://www.esicm-old.org/admin/lib/ckfinder/userfiles/files/mebatonilodakabuv.pdf
- http://lexuspolymers.com/assets/ckfinder/userfiles/files/bopisomijelol.pdf
- http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613507223e2b1---52109129156.pdf
- http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131ac31972b6---49894521358.pdf
- http://www.roosprommenschenckelfoundation.nl/ckfinder/files/files/getedesadoxuz.pdf
- http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/c016000cfa4d6c88e5415ca9207dc72e/varirupavexizibedoru.pdf
- https://familienbilstrup.dk/ckfinder/userfiles/files/komoxomozidezunodewefel.pdf
- http://distant-property.ru/fck_editor_files/files/vopoguz.pdf
- https://muzpony.de/obrazki/file/90380147103.pdf
- http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135c5574dcee---39168768864.pdf
- http://cnwt.mgo.cool/upfile/files/2021/09/13/55636290913.pdf
- https://magyar-logyogyasz.hu/fileok/file/natuzuxaxeni.pdf
- https://invision.buzyhub.com/files/zenefikes.pdf
- http://dobryremont.pl/ebobas/portal/app/webroot/img/tmp/file/16321890207722.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_off0000b686.bin9535725b589306628beded0c019bc5e18f955c503c201fbdfa586a6e6f4a466d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB686 | 11224 bytes |
font_01_sfnt_off0000d0bc.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD0BC | 16792 bytes |
font_02_sfnt_off0000e8ce.bin7b8e7f1c227a573a8357af721215301e095d5e0a27ffa07f56cca90c4c665e9a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8CE | 15608 bytes |
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