MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with many URLs pointing to disposable hosting or compromised CMS uploads, suggesting an attempt to redirect users to malicious sites. The presence of numerous unknown URLs and a confirmed benign URL with a UTM parameter further supports a phishing or malware distribution lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
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 http://ruihuitax.com/files/file/rowisi.pdf
- https://quangcaonoithatgiahung.com/admin/webroot/upload/image/files/23391876057.pdf
- http://marthomaiticherukole.com/userfiles/file/75536680198.pdf
- http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ps4vb0545j1qrgu1i6lrkcdoa2/68279574144.pdf
- https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ae05518c5d---nigixeredib.pdf
- https://graffitipaintstudio.com/wp-content/plugins/super-forms/uploads/php/files/cd7b4c2005a8656c755e3d859d47f8f5/68081285448.pdf
- http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd95f97ec19---70953762617.pdf
- https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b753aa1122f---55523974187.pdf
- https://deniz-sogutma.org/img/userfiles/file/pojivar.pdf
- https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/hqb9mrau1gh9e214tkbagpf02h/furerilepusir.pdf
- https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/80363df36624a1071f58a3ade2bd597a/26902033819.pdf
- https://anctools.com/ckfinder/userfiles/files/40641266369.pdf
- http://soundreaming.org/wp-content/plugins/super-forms/uploads/php/files/c097ae36a607c54ed7f1dcefb6e96703/19931445565.pdf
- http://rauvuonsach.com/images/uploads/files/21875692138.pdf
- http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/80513dd94696cf04937dea33f3e511ca/fazulewoxigu.pdf
- http://www.aluvascientific.com/UserFiles/file/merasidalawibonobazem.pdf
- http://stratford1980.com/clients/1/19/19838be1bbe5684469623718d5e25b5d/File/64289823451.pdf
- http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbd2c03b760---7290755814.pdf
- https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/8fab1d62ce9b144ea4cc0483cfd9edea/18783695515.pdf
- https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075e5352510a---67492445809.pdf
- https://www.opdrrustukalac.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1ac9fd4df1---kanujipokoraloli.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=too+good+to+go+dk
- 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_off0000e41c.bin3af35967f41931c40d1dff2885ff4b0b5faaef3ed23a18cb593399e5aff6f2eb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE41C | 17916 bytes |
font_01_sfnt_off000112bd.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x112BD | 16792 bytes |
font_02_sfnt_off00012ad3.bin2de884feb1cf199699aef11d6a4d3188d27a99240a9302b8718d81b2ebd97a5e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12AD3 | 9676 bytes |
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