MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected as malicious by ClamAV and a machine learning classifier, and exhibits characteristics of a phishing lure. The heuristic 'SE_FAKE_CAPTCHA' indicates the document displays a fake CAPTCHA or human verification prompt to deceive users. Numerous URLs were extracted, many pointing to compromised WordPress sites, suggesting a link farm used to distribute malicious content or redirect users to phishing sites. No scripts were extracted from this sample, limiting the ability to determine specific execution chains.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 7
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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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Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHADocument displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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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://crysiq.ru/uplcv?utm_term=how+to+get+free+coins+in+fifa+mobile+21+without+human+verification
- https://www.ltgpartners.com/wp-content/plugins/super-forms/uploads/php/files/0a3a8e7a13cf0a2d33a499cc60b70d63/sulatebadaken.pdf
- https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d89768c3c45---xowovisatigu.pdf
- http://www.tobywells.org/media/fckdir/file/50639223770.pdf
- http://ndt-tl.ru/upload/file/92554112582.pdf
- http://shipagents.nl/uploadfiles/file/pokoxox.pdf
- http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160cc47ef93e75---73799451374.pdf
- http://bagliodeimille.it/userfiles/files/29588857613.pdf
- https://kawanmto.com/contents//files/11533842328.pdf
- https://qamarapps.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b45726f36ae---volijolutepirejebubuf.pdf
- https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/acb4c229c15fb2587518059c27a9c655/64938086299.pdf
- http://midiabyz.com/wp-content/plugins/super-forms/uploads/php/files/c05b11492d9bafcc7d136803e62929a6/tolinujagajisulerukena.pdf
- https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/160759a6883121---9167095076.pdf
- https://systematix.pl/userfiles/file/91363313054.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160986f97a5b3e---megudubosisizebi.pdf
- https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c51487696d7---gaxil.pdf
- http://upoart.com/ckfinder/userfiles/files/67884450546.pdf
- http://ericshartman.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/44714030372.pdf
- https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/4b54ef9012c602e72a589b5797474065/fusokafidugewewusinilukob.pdf
- https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/a09dee9fb1399db6d28803b60253f2f6/kodazuvarom.pdf
- https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/eb8e798e589c1bafc6f19b3503a5192f/20529753354.pdf
- http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/3d06d2e247db0e562fc6b0bb89241d20/lamixusamevomagoworojife.pdf
- http://metabolit-plus.ru/files/file/8673457452.pdf
- https://eletvital.hu/uploads/files/rixopeligaziwuzepubonaxa.pdf
- http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160734d492dc3b---rekuxejos.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_off0000e40e.bin196c0c579f5ff09dec3b753e9b4be6c5a763d311b0194015bdb6ee96c991da33 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE40E | 17592 bytes |
font_01_sfnt_off00011262.binfff570dee1c9f8dd1fa2f165a5ebd6a6d4808ce08e82c6f6d68385490309de04 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11262 | 11336 bytes |
font_02_sfnt_off00012d02.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12D02 | 16792 bytes |
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