MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a link farm pointing to multiple disposable hosting domains, disguised as a download for a USB driver. This is a common lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to deliver a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9961
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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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://tavio.ru/files/file/guxuworiradosipini.pdf
- http://hytechplus.com/userfiles/file/45783045734.pdf
- https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e62cd7b7039---zegigatikufozugaxunebavi.pdf
- https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d98b539fb9---rowologenuro.pdf
- http://belst.by/upload/file/57537616017.pdf
- https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/cdefb3c6e2ae9a9a39349b50a989780a/venakatinupuwada.pdf
- http://www.caslyn.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160be3d0ec897a---60598931639.pdf
- https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/c140b6973adf38d5dbe983bc656e6cc3/ripededowefadujukejareg.pdf
- https://transport.frontiermyanmar.com/sites/all/libraries/ckfinder/userfiles/files/53856008170.pdf
- https://mintedimages.com/ckfinder/userfiles/files/40984636956.pdf
- https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607c92400b95a---sagiwojosad.pdf
- https://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/d997262c689cfc055980cd841f86a2c7/ladogenusexuwasegobom.pdf
- http://math-talk.kr/wp-content/plugins/super-forms/uploads/php/files/pp9rvkdmfa4t0ilbd9nsk24ru4/pokerodupegatebuzumiro.pdf
- https://kvkumariajnkvv.org/singhania/downloads/file/86831518095.pdf
- http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609b55e9bfbcc---vadadufe.pdf
- https://ludifrance.fr/userfiles/file/14357417010.pdf
- https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/a0e11ce5f2e48d58f00bfe49f146a837/73750991169.pdf
- http://anhuishangbiao.com/upload_fck/file/2021-7-22/20210722034922569942.pdf
- https://bisnismedsos.com/userfiles/file/65801553430.pdf
- https://www.lsv-wittlage.de/ckfinder/userfiles/files/gafafudikemuvetulifoj.pdf
- http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16077c46e93449---fekamonidikupapigi.pdf
- http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/160848b47cd616---32642775339.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=usb+driver+for+windows+7+64+bit+hp+free+download
- 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 5
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f1b0.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF1B0 | 16792 bytes |
font_01_sfnt_off000109c2.bin849ae450d4a26015a4f16f1553cbbaf0a7eb45f53235b3d31bb59f30986673af |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109C2 | 20464 bytes |
font_02_sfnt_off00013c02.bin5786d7639d2cc1522a1a3889fae5b5c9fbcbd5f5c9de2f5a2930a0e54327038d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13C02 | 16684 bytes |
font_03_sfnt_off00015396.bina2ac081e08affb0ecf0a940f0eec8b4be73ee6624f5ae6ef3b741cdea718dd26 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15396 | 2688 bytes |
font_04_sfnt_off00015ed6.bin0a4e114c5dc9a25b5909922487f5b9514a37db4984152a1a12b98b7657e4aab5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15ED6 | 11192 bytes |
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