MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file is identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan delivery mechanism. The document likely presents a fake CAPTCHA to deceive users into clicking malicious links, as suggested by the 'SE_FAKE_CAPTCHA' heuristic. Numerous URLs embedded within the document, many hosted on compromised CMS platforms, point to further malicious content or downloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9932
Heuristics 7
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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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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://catamma.ru/uplcv?utm_term=rewrite+with+different+words
- https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/ed1c4d86e6fbd914270f4fdb8c67fa8f/59741242391.pdf
- https://gastrotest.co/ckfinder/userfiles/files/91431371385.pdf
- https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/f8e0854fc04a5fb642075fed72bacc0d/48140162838.pdf
- https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/8b3fac11d518c5e4fe1835c9a952facb/27177587716.pdf
- http://cleangroupbd.com/ck/upload/files/57491067473.pdf
- http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607d31ee9b8d2---90645536257.pdf
- https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/67c4f216cd3ab0023ba4b9ad4380d604/42481172793.pdf
- https://stagerightstaging.com/wp-content/plugins/super-forms/uploads/php/files/90396aabd1a1847de43870271284cf9c/gukopegatuselakedelogojav.pdf
- http://beiwendq.com/userfiles/file/lalipematesarurejef.pdf
- http://dashoernerboot.de/userfiles/nimekotibu.pdf
- https://sunwayhk.com/louis/STARKGROUP/ckfinder/userfiles/files/nixebokuvaguz.pdf
- http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/160b43d8206db9---69126870181.pdf
- https://akapacha.com/userfiles/file/77022943356.pdf
- http://gardnersunited.com/clients/e/eb/eb3320446930dd457027df34457c622b/File/saxamajisoxajidumivod.pdf
- https://ocw.tw/uploads/files/65346658286.pdf
- http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abb83a43cc3---doviwawidiwadibukurowexob.pdf
- https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607417fc2cf5f---60238672339.pdf
- http://waltwhitman1964grads.com/clients/6/6c/6c9ae932573016e5ff31759a10dce4b4/File/55935854318.pdf
- http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/1607bdcd8cef99---didazebalazisazefoki.pdf
- http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/bpsopjj5b9pqvumtq5dpvdjlg5/jegar.pdf
- http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/160baa3af4bb83---52075033736.pdf
- http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1608d82b63a07f---lutogosinasumatepulosi.pdf
- https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/1c4a33e8257645e1d8d9bff23be7209d/92034741412.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ecb7.bina41b94ec82f7fbc24af390c6cf9411a1345f5f397fa09bbc1e41b4d5e7b42576 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xECB7 | 10376 bytes |
font_01_sfnt_off0001042f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1042F | 16792 bytes |
font_02_sfnt_off00011c40.bin0ba07f6d54a4cb2ae74247f97c6a926e6d6308299df35fe3bea2e399aa3885da |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C40 | 16336 bytes |
font_03_sfnt_off00013275.bine085f70067669d63c3321d3d82b0dbc869111a34ff70a5b6597899eac60e32c1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13275 | 17444 bytes |
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