MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a link to a known malicious redirector at 'ttraff.ru', which likely serves as a gateway to further malicious content. Another heuristic indicates a large number of external PDF links, suggesting a link farm designed to manipulate search engine results or distribute malware. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=anaemia+definition+pdf', reinforcing the malicious redirection 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=anaemia+definition+pdf In PDF document text
- http://files.southforkprovisions.net/uploads/1/3/0/8/130874091/9076708.pdfIn PDF document text
- http://files.marknuytkens.com/uploads/1/3/0/8/130874567/jabasores_reboputojon_kelaporuze.pdfIn PDF document text
- http://files.trebor-ts.com/uploads/1/3/1/8/131871690/4fa93.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0437/5586/4213/files/11564573439.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/2490/6400/files/91148014322.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9881/6150/files/pdf_to_dwg_converter_zamzar.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0167/5939/files/allah_names_in_tamil.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3017/4113/files/baunvo_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6688/4250/files/9708853745.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0940/1251/files/41428460544.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3406/6600/files/transnet_employment_application_form.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4479/7600/files/gasosarubopatoxuxiwovofa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6550/0060/files/16916060812.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/10542261424.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4551/9513/files/lobekusawosen.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4807/4405/files/72527815698.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f948.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF948 | 4656 bytes |
SHA-256: 3b1a6714b5cc5554bc62dd3abdce5d0953955f058f5b1ba07b49c46d2a329bba |
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font_01_sfnt_off00010903.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10903 | 16348 bytes |
SHA-256: 2c3fbbcf2b79e31727631b8bc4b8aacf7266dda69a595a99e0e9e78d0ebfb924 |
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font_02_sfnt_off00013c1e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13C1E | 4324 bytes |
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e |
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