MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for Pdf.Phishing.Trojan. The presence of numerous external URIs, many pointing to compromised CMS upload storage and disposable hosting, indicates a link farm designed to redirect users to malicious sites. The ML classifier also strongly indicated maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 0.9946
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://smidgel.ru/uplcv?utm_term=web+annotation+example
- http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a1137bd85c5---39039460923.pdf
- http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/d6i7lddheb9rt5j1vt50406kqe/momatitiwidog.pdf
- http://iltorg.ru/upload/file/wadogavutasaxunasuzewed.pdf
- http://summithigh75.com/clients/867147/File/gunabipasevexurevufimana.pdf
- http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c94b8515a4---73284237367.pdf
- https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/16077d7a61de1a---32768325562.pdf
- https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/35d449cb9403f0963ed30755277e6bf1/geseguneduwewopilivitale.pdf
- https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098426c912bf---91944248156.pdf
- https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/218d416c5c13fa3ad1c2a6be4da94bf2/pulanubarirezup.pdf
- http://wami.cc/data/files/74998671220.pdf
- http://edgecs.net/documents/xuwojunekapibalisividuso.pdf
- http://aj-logistics.com/stock/userfiles/file/69649647446.pdf
- http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608b12014c165---jozojuzudojofapuganidakin.pdf
- https://isabellepieman.com/userfiles/file/vewenizuramofipovuka.pdf
- http://surtek.biz/image/files/20150111_071615.pdf
- http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/ta0mmp0jqlg7njtc7qae67hjq5/wuwejezezejuvo.pdf
- http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160a9d91660405---lukozegajuxonale.pdf
- http://orbitsecurity.qa/pro_mvp_tech/uploads/file/raperulazaligugoduw.pdf
- http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a84114a66db---22176045732.pdf
- http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b878f331cf4---fezasuvujikunomaz.pdf
- https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16072bebc7fe2a---gojebuxefelez.pdf
- http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160919fefe5d0c---64845227879.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e4c8.bindaf93d93494d82854eb31422f1de342d7f392fbc3de8bcabb89dad6e962b23a8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE4C8 | 10380 bytes |
font_01_sfnt_off0000fc06.bin200bbfb466dec5d3ec265b707e534171d6c173f9e4c9bdd560e7a086e8f7fbda |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFC06 | 17592 bytes |
font_02_sfnt_off00012a65.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A65 | 16792 bytes |
font_03_sfnt_off00014276.bincce95c11222635aeaa44c8a08c9f96af0a5dc8f437bcb1bb9b1503f42ff2a767 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14276 | 16700 bytes |
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