MALICIOUS
244
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was identified as malicious by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure and a link farm. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and a date, suggesting it was generated programmatically. The primary attack pattern involves directing users to external URLs, some of which are associated with malicious redirectors.
Machine Learning
- Nyx PDF Classifier malicious score 0.9995
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 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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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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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://yafferge.ru/strik?utm_term=easy+to+build+shooting+bench In PDF document text
- https://cdn-cms.f-static.net/uploads/4490369/normal_6016234ab7747.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4452392/normal_5fd26fc86e848.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417327/normal_602713994b46b.pdfIn PDF document text
- http://toportt.online/befofevuvaduj0wvo1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465548/normal_60238bf5e14aa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413862/normal_6027015c6e05c.pdfIn PDF document text
- http://cmbespaceclient.xyz/lovecraft_s_untold_stories_collector_s_edition_ps4vlbtk.pdfIn PDF document text
- http://lnstagram-verifedbadge.com/how_to_get_adobe_premiere_pro_for_free_2020_macbqwpz.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4463803/normal_5fe92da4084f9.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4413361/normal_5fef8df6c9a17.pdfIn PDF document text
- http://xinupavob.iblogger.org/20696442547.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4369915/normal_5ff50e5793dda.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://7f03322d-63d6-449b-a8c2-a80beffeb2b6.filesusr.com/ugd/2994dd_acf62145b6f04750bb25293657f16804.pdf?index=trueIn PDF document text
- https://acfcda0b-1795-4b40-aedc-9a0bc13047ce.filesusr.com/ugd/89c6ad_65055f3db37843cdb80ac44b10b39701.pdf?index=trueIn PDF document text
- https://61090d85-22e6-4724-b969-52a17785150c.filesusr.com/ugd/952c2e_d63ab8c4b2984da1b3548dd2f4fc2c36.pdf?index=trueIn PDF document text
- http://menimilerawapo.rf.gd/go_tell_it_on_the_mountain_characters.pdfIn PDF document text
- https://ef2e072a-e8a2-4438-804d-cc750be2e2f6.filesusr.com/ugd/6a22cb_49571aca41aa45eb8106601ee2d28eb8.pdf?index=trueIn PDF document text
- http://lexojowal.epizy.com/meteoric_rise_guide.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8f06ae7b-9e17-43d0-af84-62344adbe14e/zorba_the_greek_full_movie_online.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a4fd503d-890e-40cf-ba01-177414f3be3a/zufarezoxobijuti.pdfIn PDF document text
- https://e61e9f85-32c5-4861-9fd4-b89109084c35.filesusr.com/ugd/2e4eb4_4d5ca0d9716148b79319a5061e49b457.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/0bf9e3e9-5a9b-4cda-921c-7041c3221b97/sireve.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://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_004_off00012ab6.bin |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x12AB6 | 17204 bytes |
SHA-256: 9f5a28f713e5c974a6685df1d593c44009c04d6660ba6c0b727b4b8dfe2d7ff4 |
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font_00_sfnt_off0000f318.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF318 | 5304 bytes |
SHA-256: 809e6b7f76676fe6ea7a49aae6ebfd60c4d1cb9ac36e8ce3e874c6601ed3e963 |
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font_01_sfnt_off00010527.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10527 | 10900 bytes |
SHA-256: 83316588c9d397de12f0551b4cd270d1d38114070445a59d8a6f9540433f6d5c |
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