MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious File
The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating it's part of a link farm hosted on compromised CMS uploads. The presence of multiple external URIs and the nature of the heuristics suggest a phishing or malware distribution attempt, likely delivered as an attachment. No scripts were extracted, and the document body was unreadable.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
Heuristics 6
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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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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://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/1babd6dd9733e26b1afeb2b19eb152f4/mefif.pdf
- https://aviseco.ro/userfiles/file/zotepemakisedupipawuwenug.pdf
- http://xiangzhuan.tw/upload/files/gitulawojegetigutoxim.pdf
- http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608eef8a8333e---rudodusiwunujow.pdf
- https://martensmgt.com/business_school/uploads/file/nusobu.pdf
- https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160813a6fb645d---18694559442.pdf
- http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a3d4103852b---rivamupisawoxiro.pdf
- http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf612cc7416---76405834998.pdf
- https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/bdd96be6c8d811227f8c19c16028b9f1/degelodabobukanig.pdf
- https://damiel.eu/userfiles/file/nowiremosulidifusen.pdf
- http://ganan10.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160d08fc91722c---jomibamata.pdf
- https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/2smis4579q9qju45j93lehr8ok/79284074201.pdf
- http://cohensevents.com/clients/74638/File/zabakedibimotuzetovi.pdf
- https://alrukn.co/userfiles/files/tiradiwimime.pdf
- https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/160968f80d968b---25881131198.pdf
- https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/3eaa97a58c952e3630d8a448a126dbc7/jiperesupufi.pdf
- http://bafiti.com/sklep/userfiles/file/30563055954.pdf
- http://thegibbsfamilyreunion.com/clients/d/d9/d929505c7faf6263097cc97620c39d65/File/suzonuvosununovazilomoba.pdf
- http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1890a26bf7---57751238718.pdf
- https://www.rekalibracija.com/wp-content/plugins/super-forms/uploads/php/files/ef6bc5cec17feea1e9baef42151d346f/fefazepaxobivuvigazek.pdf
- http://prttour.ca/FileData/ckfinder/files/20210605_E416A686E5CCF661.pdf
- https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160843dda30829---54214935745.pdf
- https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be7b605bdd5---lagelejapapo.pdf
- https://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16085cfae4a277---41787845515.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=absolute+value+function+in+c%2B%2B
- 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_off0000d148.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD148 | 16792 bytes |
font_01_sfnt_off0000e95a.bin9463df04af8df468ad4f9da79354c2e77a4ca776f9b087b866bcd7ed9723210b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE95A | 17124 bytes |
font_02_sfnt_off00011677.bin004247d86d54cb10bed047be5605333df7a354e6bf4f36c9908746e7c76788ad |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11677 | 10516 bytes |
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