MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to direct users to potentially harmful websites. The primary URL, https://jacksth.ru/award?keyword=big+blue+bus+8+schedule+pdf, is presented as a search result for a bus schedule, likely a lure to trick users into clicking and visiting a malicious site.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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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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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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://jacksth.ru/award?keyword=big+blue+bus+8+schedule+pdf PDF link annotation
- http://dimozakebaba.scienceontheweb.net/tewem.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4458614/normal_60616a2dc2eb9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4498986/normal_604689164a4c2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4460473/normal_6054ba05ed560.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4450139/normal_60447171f3056.pdfIn PDF document text
- http://lejifip.sportsontheweb.net/solo_jazz_guitar_arrangements.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://aa6eca1a-c690-4a36-985e-a873157a80b3.filesusr.com/ugd/081493_e8b8f6e5c8a347ed913d3a39890a875b.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/xovekolamoxe/83930041897.pdfIn PDF document text
- https://f856bbc4-01c8-45e4-8891-a53c5ee59fd0.filesusr.com/ugd/8e827e_82b61adced4e44ac82bf59156e3110d6.pdf?index=trueIn PDF document text
- https://a1c9bafd-2917-4c1b-b79c-a4b44a941470.filesusr.com/ugd/f0f215_b76c50913e954cd78abae61c3c527dc2.pdf?index=trueIn PDF document text
- https://61069a5e-3c5f-4884-a3c7-8c7552058b74.filesusr.com/ugd/0789d5_4ab59fa79edb477694bb2d5135403bc0.pdf?index=trueIn PDF document text
- https://24a70dd4-b549-4b9e-9c0a-6eea45ab85ad.filesusr.com/ugd/ab0c63_9280a7d0555344a3ab7f3466cbd7f734.pdf?index=trueIn PDF document text
- http://wefofumerari.rf.gd/gladiatus_beginners_guide.pdfIn PDF document text
- https://aa700e4b-9450-4a85-8b7e-8c92ffe47626.filesusr.com/ugd/de972d_072af9c49ca44f6592ae8c5d21648853.pdf?index=trueIn PDF document text
- http://xozokol.rf.gd/8977551349.pdfIn PDF document text
- http://jojulupijawide.onlinewebshop.net/20698570957.pdfIn PDF document text
- https://0a37a3d5-a0bf-4e77-8ff5-6127fd08aefa.filesusr.com/ugd/6046c9_cc16e3473c2c42baafff9d279d11ae1f.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/xijalovelokolep/how_to_calculate_yield_to_maturity_of_a_treasury_bond.pdfIn PDF document text
- http://rabatelekovufar.myartsonline.com/bagawe.pdfIn PDF document text
- https://s3.amazonaws.com/robumuduluwise/borg_dyspnoea_scale.pdfIn PDF document text
- https://s3.amazonaws.com/jenagubadopi/android_toolbar_shadow.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://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000109c8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109C8 | 5496 bytes |
SHA-256: 49a7c4a209146a81305dea7e40b43d2ccc27a24a09eb9761f342a5135a9b74ea |
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font_01_sfnt_off00011c87.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C87 | 11284 bytes |
SHA-256: 3829ee6a990c988752bc6e11c7fc5f8ec95c8ec64d812e3f1ec3c9e276424ca7 |
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