MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The sample was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, presenting numerous URLs hosted on compromised or disposable domains, likely to lure users into clicking and visiting potentially harmful sites. The PDF structure and embedded URLs strongly suggest a phishing or redirection attack.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
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 http://thanuyentea.com/ckfinder/userfiles/files/tirikubujozasu.pdf
- http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5ce13b6c0a---pedoxovikowipinedeperebi.pdf
- http://sxcec.org/userfiles/file/31734028223.pdf
- https://www.hed-endo.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1607cca39a1b4e---navogasegukumuwilok.pdf
- https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/12f1d1f120146261348248ec88a5fa40/disejonobiw.pdf
- http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160986f33f317c---sesoroborefejat.pdf
- http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16077eabea3094---46502041110.pdf
- https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/6804dee78614fa81120308c6036e16b1/28425599158.pdf
- http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094e65186cb8---95016495797.pdf
- http://progfin.pl/userfiles/file/gesoruzuwefovasofano.pdf
- https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607a9d836dcfd---95939042509.pdf
- https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/5bbaj6bmb3d2p98v5s3pp8jogf/xukabedazonedap.pdf
- http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/16071af487b025---57575474801.pdf
- https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607dc3a2988a5---93455269657.pdf
- https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607b52f8e73f0---walawamitupexixirixujegos.pdf
- http://cesishotel.lv/res/wysiwyg/file/furume.pdf
- https://www.helpfulhunks.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609950447ac7b---disipumerigelikudup.pdf
- https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/de5hhceoele950i6ddjn4co4gj/varesokekolujanik.pdf
- http://allamericannursing.com/userfiles/file/durubotupozapobakotexiwa.pdf
- https://marbeyoyun.com/calisma2/files/uploads/40646805093.pdf
- http://www.blueoak.fr/image/file/31366971002.pdf
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16082792ff3972---99578686897.pdf
- http://phukhoabacninh.com/images/files/fenolerexod.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=too+sensitive+to+noise
- 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_off0000f0f6.bin4f22a8c41f8d1859890a83a6b4454fbbe46bba49d4815893a509ae2c239bad2a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0F6 | 17644 bytes |
font_01_sfnt_off00011eaf.bin39212d5cf45b523cbf0650a5a986111c12a83387b4ef40ea5c4368c9db137baf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11EAF | 9824 bytes |
font_02_sfnt_off00013471.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13471 | 16792 bytes |
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