MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of links, many of which point to external PDFs, suggesting a link farm or SEO manipulation tactic. One of these links, 'https://ttraff.ru/pify?keyword=black+body+radiation+short+note+pdf', is identified as a malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent.
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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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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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/pify?keyword=black+body+radiation+short+note+pdf In PDF document text
- http://files.scaretour.co.uk/uploads/1/3/0/7/130739713/7454599.pdfIn PDF document text
- http://runojolaw.edgertonwellness.com/uploads/1/3/0/8/130814328/6508971.pdfIn PDF document text
- http://files.thewarsoftherosescatalogue.com/uploads/1/3/0/7/130740211/f558ee.pdfIn PDF document text
- http://files.youcee.eu/uploads/1/3/0/7/130775151/zigib-vebatatubaka-kijabe.pdfIn PDF document text
- http://files.veresan.com/uploads/1/3/0/7/130776720/mokawerarajimaxose.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4111/1716/files/74277263128.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5618/4992/files/defakokukimikolawofobisup.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1785/4373/files/34281002695.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6844/8165/files/xamixozusipu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/4029/1486/files/24196120997.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/5663/6828/files/bokixeduzu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/2677/6227/files/mathematics_form_1_questions_and_answers_pdf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8749/5321/files/gingivitis_asociada_a_placa_bacteriana.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/1737/1801/files/fopenixenuzivogifuvenago.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4204/5090/files/96273846069.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5699/6247/files/17229302435.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9836/5340/files/39857037068.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0444/5034/9223/files/junkers_gas_calorimeter.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000b176.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB176 | 5600 bytes |
SHA-256: a11c0746bca5b624a61e13e7db155a433ff6cc97269e570737bc235a5ff58a69 |
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font_01_sfnt_off0000c482.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC482 | 13816 bytes |
SHA-256: 0c30637964417d732e03eb1533d1218bee43fd1e3e77321311a75107dcb14997 |
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font_02_sfnt_off0000f08f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF08F | 16512 bytes |
SHA-256: 6bc0bded15e1533fd20b8803677197f18b49183b8e714809341b5151e399a600 |
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