MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded links designed to appear as legitimate downloads, but they redirect to a malicious infrastructure. The primary redirector URL is "https://ttraff.ru/pify?keyword=nitro+pdf+blogspot+download", which is part of a link farm strategy to lure users with fake software downloads. The ML classifier strongly indicated maliciousness, and the PDF structure itself is indicative of an SEO-based phishing or malware distribution scheme.
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=nitro+pdf+blogspot+download In PDF document text
- http://files.oaklawnbaptistchurch.org/uploads/1/3/0/7/130738524/b9f86b3.pdfIn PDF document text
- http://files.ericamesser.com/uploads/1/3/0/7/130740624/3f9387e55a5bb8.pdfIn PDF document text
- http://files.standrews801.com/uploads/1/3/0/7/130739779/fexalirezi.pdfIn PDF document text
- http://files.joekreszfitness.com/uploads/1/3/1/6/131637021/984c478f6.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/1/0433/8244/0103/files/gelamiwakesunupur.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/3894/6981/files/fesud.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3798/2869/files/47315662332.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/8736/2216/files/zeritibad.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5904/3749/files/rujudujudobevowalijamefad.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bijalikupuxamimidesedol.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8260/3927/files/38844156438.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3487/7847/files/sulufakedidowujeputekopev.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vawis.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8531/5739/files/physiology_book_free_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7609/1045/files/adobe_pack_cost.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/9818/3582/files/41553515787.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_off00006450.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6450 | 5080 bytes |
SHA-256: c19b86c67b55d0f7a28ea76e9c3917d0cfb9ab7ba8643ff448b1773ce989ef69 |
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font_01_sfnt_off000075a8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x75A8 | 9920 bytes |
SHA-256: 1873f970517972362b3c559296baab31211de5e54cd18e59e803b7be872ee532 |
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font_02_sfnt_off000097ae.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x97AE | 4324 bytes |
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34 |
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