MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The document contains a link farm pointing to various PDF files hosted on potentially compromised websites, suggesting an attempt to distribute malware or phish for credentials. The presence of a 'download button' heuristic further supports the lure-based attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9846
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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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 http://china-miyaco.com/img/file/202161182334.pdf
- https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/mv9t8qq6lg1uj9ibsvl1alnqo0/77110507388.pdf
- https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606f973fa8189---47355506479.pdf
- http://nagymester.com/userfiles/file/pizenuvebagamuzo.pdf
- http://go-trec.com/wp-content/plugins/super-forms/uploads/php/files/qnh5hmbi6uj06s0qctj7juvvmo/44762335960.pdf
- https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/b7b466c73dc42864773f0660da0329db/17179601928.pdf
- https://ludifrance.fr/userfiles/file/kidufosinujiruteduzukolor.pdf
- https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adfca19ddfd---70065928398.pdf
- http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/1609c45b1c33b5---9627089714.pdf
- http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609a7349996f1---pitirekikikebukojir.pdf
- http://alexanderkanevskyartistbiography.com/clientMedia/file/86897590318.pdf
- https://otdelkamos.ru/wp-content/plugins/super-forms/uploads/php/files/19fa484fc7efd35d091de4a993858319/57442516807.pdf
- https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b931de20da1---rotojirazikelizararizik.pdf
- http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160c8fae26ba49---bilekalugusaz.pdf
- https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/acfe34303b8819aef6bc7c223311d155/joladam.pdf
- http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/16076e1de38d02---ligogewuluzakatax.pdf
- http://guides2alpes.fr/uploads/file/13039449311.pdf
- http://apartmaji-zunicmile.com/uporabnik/file/zenezarogetedu.pdf
- https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/agr5a87ehncqolqavbigfto56d/bajajewavabizujagel.pdf
- http://timandlor.com/userfiles/file/27915588044.pdf
- https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/d7ada893e69080fa3e01b030058f6993/32427827160.pdf
- https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/ad785836a1b3dc6542c31f3090f901ca/1247795240.pdf
- http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607899510bff2---97985829759.pdf
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/3f1ff831ef2a0060bc39065b3379c182/67741557785.pdf
- https://drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160978332a24e1---2868456463.pdf
- http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070bff9cd142---xojimegogigepomuduru.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=2020+irs+1040+tax+forms
- 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_off0000dbf5.bina4e0ea865bffb269c998d57f3b451ec5f490c62e45016167e9766c71789ed004 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDBF5 | 16868 bytes |
font_01_sfnt_off000107c4.binbbaa080b7bb5227bb59012bc1b50212c59d26ad94d30d80dc4b16b13aec9d7dc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x107C4 | 10468 bytes |
font_02_sfnt_off00011fb4.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11FB4 | 16792 bytes |
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