MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of maliciousness. The file contains a link farm pointing to compromised WordPress upload directories, suggesting it is used to distribute further malicious content or phishing pages. The presence of numerous unknown URLs indicates a broad distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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 http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/16090f91f26709---bikafetiboroberige.pdf
- https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/cd9b7c4c4919039acb6c63620b5e6595/63324441745.pdf
- http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/160cda97485e96---3945952125.pdf
- https://khotelmarket.com/FileData/ckfinder/files/20210819_8036A7C2C598C055.pdf
- http://thehawthornnyc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b027cd035dd---21725963820.pdf
- https://zippy-inc.com/app/webroot/userfiles/files/ximokuzilazojabewa.pdf
- http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e97d9a4978a3779f616e8589395c3635/24154176572.pdf
- https://markyatirim.com/resimler/files/dofugibidodazaburotamozud.pdf
- https://anandamsanyal.com/userfiles/file/41128882949.pdf
- https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/acc4a99647ca9fc5311db5937f24a7d7/xiferaluzabuta.pdf
- http://jfhcoaching.nl/userfiles/files/28880625357.pdf
- http://russia-ex.com/images/blog//file/girazitukomovudixelovoko.pdf
- https://tavio.ru/files/file/36707120179.pdf
- http://www.prunay-en-yvelines.fr/ckfinder/userfiles/files/29709971693.pdf
- http://wienbildarchiv.com/upload_files/files/18448847104.pdf
- https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a01a2acead7---18162666424.pdf
- https://phu-komplex.pl/pliki/file/roziwetujuna.pdf
- https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1608af1d0e71f7---76067570754.pdf
- https://www.gasserbush.com/wp-content/plugins/super-forms/uploads/php/files/0ba8c8241078f34391a106a445cf9409/zipufowokama.pdf
- http://hophungvietnam.com/app/webroot/uploads/files/41731006568.pdf
- http://inlovehuahin.com/file_media/file_image/file/vapexen.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=car+leasing+contract+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_off0000d679.bind46805b50b8356e2f01aeffb646505de03a83bffa7cdd6c57457dca56d934934 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD679 | 17168 bytes |
font_01_sfnt_off000102e6.bin5960f933a24c4d9177105c95491ef14dbc057141e4a89c7171f2f1fc59df2846 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x102E6 | 10824 bytes |
font_02_sfnt_off00011bc8.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11BC8 | 16792 bytes |
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