MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier indicated a high probability of maliciousness. Heuristics identified it as a link farm pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to redirect users to malicious sites. The embedded URLs, while numerous, do not provide a clear document body, but the overall structure and heuristic firings strongly indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9992
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://unnatiwelfareorganization.com/ckfinder/userfiles/files/89716285832.pdf
- https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/qb5a2utsjc7ttia8vkjlbea6t7/zawazimewitigiwaj.pdf
- https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9518f5f8a4---seworewamixu.pdf
- https://ryokanclub.com/FileData/ckfinder/files/20210619_66F2287085BEA7F3.pdf
- https://rajaunited.com/contents//files/11145144825.pdf
- http://xn--xhq021fvrwdth.com/d/files/lexopazezoruxodugulurez.pdf
- http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f4c43e1490---51946260915.pdf
- http://daedukgs.com/admin/fckeditor/data/file/20210604061725.pdf
- https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/dc9b56348da3c04eda4e5663ac7bd0ba/20530620931.pdf
- https://www.azembay.com/wp-content/plugins/super-forms/uploads/php/files/i3b1aq38b1upirlh66nt333fos/40370751901.pdf
- https://evg-prague.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b88aa7209c3---topimesokedaxajazimumo.pdf
- http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1609b5bd684078---gagukugoraregiwapud.pdf
- http://ahxxzx.com/userfiles/202105/file/vifarexikikadazob.pdf
- https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/bad306a4b558d9c25cb1237be7e84fa4/81360157649.pdf
- https://grafitpoint.ru/wp-content/plugins/super-forms/uploads/php/files/8eea6d92e7435adf91aa4aa2136a2f97/remagajufulesosufese.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=book+online+licence+renewal
- 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_off0000e08e.bine85d829a2b4c1be24aa269afb93669489faff56593b705289d5b2044c940daf6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE08E | 10188 bytes |
font_01_sfnt_off0000f788.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF788 | 16792 bytes |
font_02_sfnt_off00010f9a.bind27ff8b1f15787dcddfeb25918f727dafefa3a2943f34767c85b870bd47ca572 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F9A | 17304 bytes |
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