MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is identified as malicious by ClamAV and an ML classifier, with multiple heuristics indicating it's part of a link farm hosted on compromised WordPress sites. The embedded URLs, such as 'https://archism.ru/uplcv?utm_term=rrb+group+d+notification+2018+pdf+download', likely serve as lures to phishing or malware download pages. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with phishing campaigns.
Machine Learning
- Nyx PDF Classifier malicious score 0.9905
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 https://archism.ru/uplcv?utm_term=rrb+group+d+notification+2018+pdf+download PDF link annotation
- http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c89e8367ec7---98507931226.pdfIn PDF document text
- https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/8dbfdafdced88d257851d06e17af72da/211326177.pdfIn PDF document text
- https://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/b9496448d445710ffd86c29a637fb734/29931575054.pdfIn PDF document text
- http://hodori247.com/uploads/files/lowizonelerot.pdfIn PDF document text
- https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/9e213d9edcb006fbc92e07f20792fa39/544736001.pdfIn PDF document text
- http://www.asslar.de/downloads/93829119506.pdfIn PDF document text
- https://alixdemassy.fr/userfiles/file/javevane.pdfIn PDF document text
- http://vitalchurchesinstitute.com/files/file/golegupiti.pdfIn PDF document text
- http://www.nowsingapore.co.id/wp-content/plugins/formcraft/file-upload/server/content/files/16096e4b23a839---25031104752.pdfIn PDF document text
- https://gmt-tw.com/app/webroot/userfiles/files/14820666216.pdfIn PDF document text
- http://alpha-th.com/userfiles/file/pavujano.pdfIn PDF document text
- http://aroma--style.net/files/files/2226647213.pdfIn PDF document text
- http://www.deopendeur.org/imgUser/file/21694964156.pdfIn PDF document text
- https://textosolutionslinguistiques.ca/upload/editor/file/72228842294.pdfIn PDF document text
- https://ukmriptek.org/codeIgniter-hmvc/userfiles/files/potarebiwaz.pdfIn PDF document text
- https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/d88a6a590331ebe541164e32d9f4a54e/54721702956.pdfIn PDF document text
- http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160c358012add4---wusaburoz.pdfIn PDF document text
- https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/e29ca921298ec1c3bfdcd1dd5bff883a/47202922673.pdfIn PDF document text
- http://www.brickchamber.com/ckfinder/userfiles/files/falul.pdfIn PDF document text
- http://ofipapel.org//ckfinder/userfiles/files/zozaravev.pdfIn PDF document text
- https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/16109dba4c6327---bodigumi.pdfIn PDF document text
- http://beerskiboot.com/img/upload/file/76784225238.pdfIn PDF document text
- https://centrumschoolka.pl/photos/file/zofejexiv.pdfIn PDF document text
- http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b8143a245b---mazamob.pdfIn PDF document text
- http://macabrey-luthier.fr/data/Files/69166723249.pdfIn PDF document text
- http://thegioidahoacuong.com/uploads/image/files/geragedozoxar.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ffe2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFE2 | 11368 bytes |
SHA-256: 2439d86a9acb19157d3c92974b755486939faa54e4d082c6ad78646557830168 |
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font_01_sfnt_off00011a7a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A7A | 19336 bytes |
SHA-256: 6b735964133e8cbe29cb56515341b237347950d6a21a780f18060a19fe4ed9ec |
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font_02_sfnt_off00014bda.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14BDA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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