MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by multiple heuristics as malicious, including ClamAV and an ML classifier. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites and other disposable hosting. These links likely lead to phishing pages or further malware downloads, indicated by the PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
Heuristics 6
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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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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://pistant.ru/uplcv?utm_term=fernandes+sustainer+kit+manual PDF link annotation
- http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c14baf3f0f8---mivuveludikojuxaba.pdfIn PDF document text
- https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/160a4454eede23---97202724183.pdfIn PDF document text
- https://earplighting.com/wp-content/plugins/super-forms/uploads/php/files/9dbf5705a1c7aa29e66876cb44c2b6f3/vanomojubavagaz.pdfIn PDF document text
- http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080151a79a61---85315153806.pdfIn PDF document text
- https://gastriklandsbf.se/UserFiles/files/43236034231.pdfIn PDF document text
- http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adb8cc653c4---43752687732.pdfIn PDF document text
- http://salon-urody-bellis.pl/images/file/69585915473.pdfIn PDF document text
- http://bendhorseride.com/userfiles/file/24681309742.pdfIn PDF document text
- https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/7e286655bd253b14b72c2872c69bfebf/80666008605.pdfIn PDF document text
- http://teraval.cz/res/file/36535811221.pdfIn PDF document text
- http://www.azurwelcomeservices.com/userfiles/file/62636483060.pdfIn PDF document text
- http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606f366025ee3---dexovelidapobowiwa.pdfIn PDF document text
- http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c212db9418a---sukinojinimoxex.pdfIn PDF document text
- http://bollywoodsalonskokie.com/admin/images/file/bimuxagif.pdfIn PDF document text
- http://espwireless.net/uploads/file/53643589431.pdfIn PDF document text
- https://toromecanicorodeo.com/files/lemamiroxujasulatiw.pdfIn PDF document text
- http://daoltrading.com/userData/board/file/14481886748.pdfIn PDF document text
- http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c315ee56a25---munerewemegi.pdfIn PDF document text
- http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/160877df392b29---pefuxeborad.pdfIn PDF document text
- http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a58a0645f01---31796096962.pdfIn PDF document text
- http://polletnv.be/uploads/files/18709780342.pdfIn 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_off0000b470.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB470 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000cc87.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCC87 | 10456 bytes |
SHA-256: f02d32785ca1b2ee586783920a1078f8fefa258bfbaf9aac2c800ecef2997519 |
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font_02_sfnt_off0000e42c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE42C | 14892 bytes |
SHA-256: cf699e0846b2fe0794ca328b9b97bd716ff04a76f3d673b7f80a222473a7dbdb |
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