MALICIOUS
214
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged as malicious by multiple heuristics, including a critical finding for linking to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Christmas medley piano sheet music pdf' and the authoring application 'wkhtmltopdf', suggesting a lure. The presence of numerous external links, including one to a known malicious redirector, indicates an attempt to lead the user to a harmful site.
Machine Learning
- Nyx PDF Classifier malicious score 0.9900
Heuristics 5
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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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 differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILEDThe cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
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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://yafferge.ru/award?keyword=christmas+medley+piano+sheet+music+pdf
- https://cdn-cms.f-static.net/uploads/4455176/normal_60570b5aadf56.pdf
- https://cdn.sqhk.co/gixenako/g8rlfwl/vsco_mod_apk_v76.pdf
- https://levalezekavazif.weebly.com/uploads/1/3/4/6/134639406/woduderozaxa_vadiwewi_woburefexopige.pdf
- https://cdn.sqhk.co/mizogujuzo/4jbkvOx/fadaxivukinasivinuk.pdf
- https://static.s123-cdn-static.com/uploads/4415742/normal_5fe55f33e3bf5.pdf
- https://static.s123-cdn-static.com/uploads/4501233/normal_60038a378f4b2.pdf
- https://cdn.sqhk.co/nivuduful/xjauheo/xisanefili.pdf
- https://cdn.sqhk.co/boguzivipel/cZhcvEt/tigipukuparusomobifogib.pdf
- https://cdn.sqhk.co/gitaligido/kijBjaJ/51828405190.pdf
- https://cdn.sqhk.co/gofejenizew/jhdgjGi/kingdom_hearts_1._5_wiki_guide.pdf
- https://cdn.sqhk.co/mixitebumu/idiahiS/real_steel_movie_trailer_2011.pdf
- https://cdn.sqhk.co/lazimafuxuxi/fIhizhe/bigbang_kpop_quiz.pdf
- https://xufolonul.weebly.com/uploads/1/3/2/6/132695880/06f8edf1.pdf
- https://static.s123-cdn-static.com/uploads/4367940/normal_5ff29e7e1da66.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://uploads.strikinglycdn.com/files/53dd9911-6547-4978-832e-479898405ae1/partner_bodyweight_workout_crossfit.pdf
- https://uploads.strikinglycdn.com/files/ebdeddb4-f9f2-4b0e-b6a6-e524b67fbcb3/97523315399.pdf
- https://uploads.strikinglycdn.com/files/d5c95cfd-4a77-4d2b-95db-c368e03a6588/68776735836.pdf
- https://uploads.strikinglycdn.com/files/8a6f90c7-5398-4a8a-b137-62b903e45169/oculus_architecture_def.pdf
- https://uploads.strikinglycdn.com/files/4c946f66-a582-48c4-b3a5-99db08757ee7/bartletts_familiar_quotations.pdf
- https://uploads.strikinglycdn.com/files/0549c485-b2f8-4da3-a21c-9f0abeb61aaf/why_are_your_personal_narratives_important.pdf
- https://uploads.strikinglycdn.com/files/2f65a48d-1b1e-480a-b3f4-ccf5dc4e6693/how_to_fix_bose_3_cd_changer.pdf
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ec92.bin879b04b229c7f3c6a7894e50811bb066b76b2c3a1fc6888249dde92d09035e3f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC92 | 5404 bytes |
font_01_sfnt_off0000fec9.bin0367d322a0cd4a3573e0e40d4c64ba9be0ea87d7ce1016baff8d4630ff3258e3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFEC9 | 10744 bytes |
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