MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. Heuristics identified it as a link farm, with many URLs pointing to compromised CMS uploads and disposable hosting. While no scripts were extracted, the nature of the link farm suggests a phishing or malware distribution attempt, likely delivered as a spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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://cleaner.pl/userfiles/file/72848062038.pdf
- http://www.maderas-navarro.com/ckfinder/userfiles/files/govoponisip.pdf
- http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160aa4610036e6---58543704849.pdf
- https://people11people.gr/uploads/File/59723435767.pdf
- https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c960c680dfc---54431593907.pdf
- http://buergerforum-tirol.at/file/20841262676.pdf
- https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/ae4b2d35c4ea2b90ec975a0d451976be/wiralomuwegorigotipedag.pdf
- http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/160870738f24b5---51691055224.pdf
- https://alamansyria.com/userfiles/file/53406819392.pdf
- http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16071ea5fc4184---33582226550.pdf
- https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/u2hnksngvcd0cgnrhl5r6bv454/67917893203.pdf
- http://beiwendq.com/userfiles/file/22413370183.pdf
- https://perfecthospital.org/FCKeditor/file/mufilemuwivupilexotul.pdf
- http://softwarefactory.nl/images/file/vitavirofegepogisun.pdf
- http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b79559af83d---79294234784.pdf
- https://urbanplace.me/wp-content/plugins/super-forms/uploads/php/files/1a65ce99fd98f3fd097141989d6a67e1/96231046683.pdf
- http://schmetterlingsgaerten.de/file/nosakazevazinowoxukutu.pdf
- http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/3d3c57df396ee2c962055928677e9cfd/tazudurasako.pdf
- http://keacg.com/upload/files/religojivob.pdf
- http://cuuhoatudong.com/upload/files/lokivizurafusagipep.pdf
- http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608be1f1a7ff6---76348762928.pdf
- https://seataclightingalaska.com/wp-content/plugins/super-forms/uploads/php/files/27f7c329a10daaf62cfffb3b5e964aac/74974691455.pdf
- https://f27szerviz.hu/upload/files/90231426576.pdf
- http://nfc.soo.jp/file/rimufo.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=top+class+action+law+firms
- 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_off0000f1a8.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF1A8 | 16792 bytes |
font_01_sfnt_off000109ba.binf3e6573156c1aa9bf711c435ca5610d62323f0adad9f1e39b1d2c42d5941459e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109BA | 17384 bytes |
font_02_sfnt_off0001370b.binc111071e6f91be66a50124d4342dfe03f21e5b1cb57e58768edd5347697b0500 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1370B | 10560 bytes |
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