MALICIOUS
216
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is identified as malicious by multiple heuristics and a machine learning classifier, specifically flagging it as a phishing or trojan PDF. The document body, though heavily obfuscated, combined with the 'SE_SECRET_RECOVERY_LURE' heuristic, indicates a phishing attempt to steal user credentials or recovery secrets. The numerous embedded URLs pointing to compromised CMS upload storage and disposable hosting further support this, suggesting a tactic to host malicious content or redirect users to phishing sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
Heuristics 7
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Recovery secret / private key request critical SE_SECRET_RECOVERY_LUREDocument requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
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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 https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/p9sgofjhtoqpp1amhtlt77imrl/wifixivurolepupiguma.pdf
- https://tangente-mag.com/img/file/41789117085.pdf
- http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160885e565eff2---kobixuxi.pdf
- http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c40641070f6---80206962029.pdf
- https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/4eab9c6d766a4d1fae28e9fb0fbe40eb/vogovekit.pdf
- http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c0b5b02c1e0---vinijefete.pdf
- http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/0180e3b57660eaab467eb4095ba89f82/33215579936.pdf
- http://aristosaigonhotel.com/uploads/files/67889306437.pdf
- http://brenna-ski.pl/userfiles/file/4531986040.pdf
- http://proxima-design.cz/files/file/wipixeziziwobovevuja.pdf
- https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/3ef8018c5cf8a93fc38e4d06d3b4c760/34112245073.pdf
- http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/160b2f2aa2ccd5---62914079298.pdf
- http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160985fe2c26fd---76545763572.pdf
- http://host.keraladreamhomes.com/~viswabrahmathach/admin/fckeditor/editor/filemanager/connectors/php/userfiles/file/51312490573.pdf
- http://anhuizpyy.com/upload_fck/file/2021-4-29/20210429124827251408.pdf
- https://dgaspcsm.ro/ckfinder/userfiles/files/61986658646.pdf
- https://monuments-msk.ru/wp-content/plugins/super-forms/uploads/php/files/581c76cd87a1dbc9acd6fd7724242a4a/56184018263.pdf
- http://cartopack.com/Images/file/7639989633.pdf
- https://eyestech.in/wp-content/plugins/super-forms/uploads/php/files/9g7g8flc6ss8etr085am5c2sqd/46493804308.pdf
- http://myjobcareer.net/userfiles/file/2021062008341173499.pdf
- https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160cc40b4e61ee---mifazipiwi.pdf
- http://nutronicltd.com/userfiles/file/90623553157.pdf
- https://www.northwoodmedical.ca/wp-content/plugins/super-forms/uploads/php/files/t0av1fkcc8olvivbacq93h63vi/makumewamimaxopusodifiduf.pdf
- http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b730200118e---toziwoguji.pdf
- https://utilitydiscount.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3af55452ca---totududolotipevejegifib.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=how+to+get+saved+passwords+on+android
- 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_off0000ed74.bin3744ec3dcce97afef49e645b51e26f0c9e27d5bb82145703889043061683de08 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED74 | 17156 bytes |
font_01_sfnt_off00011a5f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A5F | 16792 bytes |
font_02_sfnt_off00013276.bind9509224299eeea0475908e1a62c944c283212df09c9964525631f5d619503fe |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13276 | 10664 bytes |
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