MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of embedded URLs, many of which point to external PDF files hosted on various domains, suggesting a link farm or SEO poisoning attempt. One of the primary URLs, 'https://ttraff.ru/wb?keyword=perbedaan%20statistika%20parametrik%20dan%20non%20parametrik%20pdf', is flagged as a known malicious redirector. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the structure and URL analysis point towards a malicious intent to redirect users to potentially harmful content.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
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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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://ttraff.ru/wb?keyword=perbedaan%20statistika%20parametrik%20dan%20non%20parametrik%20pdf In PDF document text
- http://files.finksdeli.org/uploads/1/3/2/7/132741222/5b0259.pdfIn PDF document text
- http://files.maddiecranston.com/uploads/1/3/2/8/132815118/9015901.pdfIn PDF document text
- http://files.inrarefiedair.com/uploads/1/3/1/4/131407629/b063a1956fd.pdfIn PDF document text
- http://files.ict-conferance.org/uploads/1/3/1/3/131379049/2300739.pdfIn PDF document text
- http://files.thepoetrypeople.co.nz/uploads/1/3/1/8/131856293/c4b2d6a90457352.pdfIn PDF document text
- http://files.dictionaerie.com/uploads/1/3/1/4/131452991/wikuvuzeg_palezumudoxuna_fasobivul.pdfIn PDF document text
- http://files.energysmartacademy.com/uploads/1/3/0/7/130739174/d6844.pdfIn PDF document text
- http://files.sbtravelbureau.com/uploads/1/3/1/8/131871677/silamotidi_zawezusokurudo_saregit.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://kolodepigom.files.wordpress.com/2020/07/fixixoxer.pdfIn PDF document text
- https://zetirufim.files.wordpress.com/2020/06/tanojapinujigaviz.pdfIn PDF document text
- https://budixifanedo.files.wordpress.com/2020/06/14944949817.pdfIn PDF document text
- https://tovuwaxupu.files.wordpress.com/2020/07/62560167824.pdfIn PDF document text
- https://latavewudewe.files.wordpress.com/2020/07/83429465771.pdfIn PDF document text
- https://zolibuvove523289473.files.wordpress.com/2020/06/9722650550.pdfIn PDF document text
- https://zopowozofoje.files.wordpress.com/2020/06/nikuxuxof.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fuwakuda.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44603331863.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54686169254.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/6565103434.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_off000068ee.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x68EE | 5148 bytes |
SHA-256: e052eaa7e29aa80409271651fd826635f572d59b6e2edd80b7ae246ada38971a |
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font_01_sfnt_off00007a46.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7A46 | 10200 bytes |
SHA-256: ca81f09d36bcab3227da0326b3c69e6a178cf31afcc42de780a9af8112170422 |
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