MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF document contains numerous external links, indicating a link farm or phishing attempt. Heuristics like 'PDF_SEO_LINK_FARM' and 'SE_INVOICE_LURE' suggest the document's content is designed to drive traffic to malicious or SEO-manipulating websites. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 7
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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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://botokaw.ru/123?utm_term=apology+letter+mail+format PDF link annotation
- https://cdn.sqhk.co/xipugonor/ojjdRYa/binomial_theorem_class_11_notes.pdfIn PDF document text
- https://cdn.sqhk.co/xeveweno/i9iiTig/mevo_2._0_manual.pdfIn PDF document text
- https://cdn.sqhk.co/rizikodeni/gZMlrJX/rekutaganezi.pdfIn PDF document text
- https://cdn.sqhk.co/pixafosabow/jvbgje9/microsoft_translator_online.pdfIn PDF document text
- http://mobutadaxez.medianewsonline.com/afterburn_effect_exercises.pdfIn PDF document text
- https://cdn.sqhk.co/kimamena/07zhbmv/management_information_systems_managing_the_digital_firm_16th.pdfIn PDF document text
- https://cdn.sqhk.co/mogizufofuj/guxOjeO/navaxuvo.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://8eefcaf3-52f5-4123-8be5-b1f0aaeea45e.filesusr.com/ugd/1d3654_30e828d601d340d4bfda16f49e854228.pdf?index=trueIn PDF document text
- https://69669160-cc20-42a3-bfef-e1e1fd1f8163.filesusr.com/ugd/8094a4_785adcd57523415a8a8aa9730812d8e4.pdf?index=trueIn PDF document text
- https://24a70dd4-b549-4b9e-9c0a-6eea45ab85ad.filesusr.com/ugd/ab0c63_eb73a614ea5f4790b674386c054ffe7a.pdf?index=trueIn PDF document text
- http://rijemow.onlinewebshop.net/xuvomoboluf.pdfIn PDF document text
- https://ec8c99fd-5413-4e38-b6a0-2ccbba71fc6f.filesusr.com/ugd/de02f3_6168dd9b7fc54276bc16f60e413cf51b.pdf?index=trueIn PDF document text
- https://6f672a44-e16c-4921-a0f1-e3781c0647c5.filesusr.com/ugd/bda22a_26caf32647f54a79a406ce99b478c380.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/jinabisura/tropico_apk_ios.pdfIn PDF document text
- https://a7176590-a44a-43b4-8b25-1171fb6190ac.filesusr.com/ugd/e6ccb8_117add516f5943dca6df9ffadcd5b6f7.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/wazotojemov/personal_computer_history.pdfIn PDF document text
- https://s3.amazonaws.com/jivuxo/42213290332.pdfIn PDF document text
- https://s3.amazonaws.com/bededuxotulapil/6198524706.pdfIn PDF document text
- https://0cc2a7d0-6f33-4335-9ec9-554d9418487e.filesusr.com/ugd/cb4a18_1ae93696357c4440a5f51f90eae36c04.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/risisipajole/82992425097.pdfIn PDF document text
- https://00c0516a-c822-4344-a779-6f74e039753d.filesusr.com/ugd/9e41f0_34295640f8334f8686ab8e4241f6446b.pdf?index=trueIn 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_off0000fbb5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBB5 | 5136 bytes |
SHA-256: ff25a965768b6a11976034ac0988c4cbd6dfab78ed52282ab4a9fca92c297bb4 |
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font_01_sfnt_off00010d27.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10D27 | 10852 bytes |
SHA-256: 88ca9ba9a8db8ae8587a80373e28f73f3e8df554e68766c11c08ab613172613f |
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