MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs pointing to various domains, many of which appear to be compromised or disposable hosting. Heuristics indicate it functions as a link farm, potentially leading users to phishing sites or further malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, classifying it as a phishing trojan.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
Heuristics 8
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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Urgency / deadline lure low SE_URGENCY_LUREDocument contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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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://infrive.ru/uplcv?utm_term=how+to+book+your+theory+test+northern+ireland
- https://www.notusweb.com.br/ckeditor/ckfinder/userfiles/files/4926210658.pdf
- http://marsalanoleggio.it/userfiles/files/risebolatinefibixapajap.pdf
- https://bawwabatrizq.com/userfiles/file/22226895579.pdf
- https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/783f87556353662d45d0414a21c3984d/22133951878.pdf
- http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e4df7098c17---sotoruse.pdf
- http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085b630666b1---400966764.pdf
- http://ttccid.com/userfiles/file/vepozexufe.pdf
- http://pk.mo/userfiles/file/75247537857.pdf
- https://earplighting.com/wp-content/plugins/super-forms/uploads/php/files/6816ef4d751a339a31e5badb17c36d42/vumaxokesamafoseke.pdf
- https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b439740d91d---repiwuxufalupomev.pdf
- http://pcmcpropertyblog.com/wp-content/plugins/super-forms/uploads/php/files/97aff4d1f6347cb9edf4e37bf5a5c926/70943733491.pdf
- https://hssanesteban.cl/files/59574452104.pdf
- http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/5630152703b3a40609e45d2c1ff7bff6/53728806923.pdf
- http://stroynerud-sm.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a4566da30d2---84826289817.pdf
- http://matchonusa.com/uploads/files/xirugaviroxame.pdf
- http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/ab17a926980437c5833113df1397986f/52594009187.pdf
- https://shotclock.ca/wp-content/plugins/super-forms/uploads/php/files/5d177d9de6999ad975dd84d0742072a0/11140455128.pdf
- https://vannordenvastgoed.nl/userfiles/file/mufajijobaxememajifewi.pdf
- https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/oqcfjifjjgtoc4l54crnqumr92/62634446825.pdf
- https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099f17d5fb17---terinarawupubegiwusolam.pdf
- https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610417b0b9dc1---49440373696.pdf
- http://medicaldistri.com/ckfinder_files/files/12223059898.pdf
- http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e8d4f6a1b95---70997310929.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_off0000efec.bin26fbfb7d7a34fefaa5ad65ffd200786deec84bcd73b4e5ec360111dead945ac7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFEC | 16856 bytes |
font_01_sfnt_off00011bba.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11BBA | 16792 bytes |
font_02_sfnt_off000133d1.bin1b8c81f3b5cc03134523ebbcd935b3f5cd94932dd6ace52130a1efa2ce64a70e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x133D1 | 10868 bytes |
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