MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs and links to compromised WordPress upload storage, suggesting it functions as a link farm to distribute phishing content or malware. The presence of multiple PDF link farm heuristics further supports this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9944
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://infrive.ru/uplcv?utm_term=fidget+spinner+io+game+mod+apk PDF link annotation
- http://xn--d1achljw0b.xn--p1ai/content/upload/fataluselefas.pdfIn PDF document text
- https://vrindaindia.com/php/joseph/uploads/file/97592743266.pdfIn PDF document text
- https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/b4580c647a70c35a3c7a39bba05bd69c/deritoli.pdfIn PDF document text
- https://miet.hu/kepek/12911407066.pdfIn PDF document text
- http://parfumland.sk/upl/foxixovi.pdfIn PDF document text
- http://gysanya.com/upload/file/210917160351572675cwz8pn5sybf3.pdfIn PDF document text
- http://etnorom.hu/pictures/55879222407.pdfIn PDF document text
- http://mylead-journey.mandiricareer.net/contents/files/zifurarefipeputim.pdfIn PDF document text
- https://vinatech.com/userfiles/file/bebakegobuxisodi.pdfIn PDF document text
- http://ahlhy.com/uploads/file/081326452143.pdfIn PDF document text
- http://swaving-stalinrichting.nl/ckfinder/userfiles/files/zotisexapuzuxonuzomifod.pdfIn PDF document text
- https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/161347dc3e44bf---sotekoniwijugewenuguv.pdfIn PDF document text
- http://monkey-do.net/userfiles/file/powanuzix.pdfIn PDF document text
- https://suadienlanhhanoi.net/upload/files/81901591045.pdfIn PDF document text
- https://www.tahitotfaluovodak.hu/ckfinder/userfiles/files/50354208366.pdfIn PDF document text
- https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/2087963d7bdfc1a3326d9b718ff00516/boduvun.pdfIn PDF document text
- http://fatfailogistics.com/fckeditor/files/file/35595214496.pdfIn PDF document text
- http://fcv-bo.org/data/fcv-bo/userfiles/file/13181263191.pdfIn PDF document text
- https://impactmediaresources.com/userfiles/file/5416167062.pdfIn PDF document text
- https://studybrilliant.online/app/webroot/img/userfiles/file/66575789101.pdfIn PDF document text
- http://kabaretyimpresariat.pl/Upload/file/nesizegitap.pdfIn PDF document text
- http://ergo-logo-bamberg.de/userfiles/file/55302509919.pdfIn PDF document text
- http://kino-profi.com/wp-content/plugins/super-forms/uploads/php/files/4b06d81dca7e7b5ac9df9766609e4425/27535963738.pdfIn PDF document text
- https://drlanda.hu/user/file/xilalodazidupoxuselixiw.pdfIn PDF document text
- http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/161371a0d53095---wotavujik.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://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_off0000b47a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB47A | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000cc91.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCC91 | 10760 bytes |
SHA-256: 31ccf616dc3b48adba0567ed11fc9342d1b8217704133ca9ca88d5e88ebde806 |
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font_02_sfnt_off0000e510.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE510 | 15912 bytes |
SHA-256: 4ae3a7522224edc05a9bb7f26c00af29515b739b5d18b1569abf0b2de1884bd4 |
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