Malware Insights
The PDF file contains numerous embedded links, with one specifically identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this, pointing to 'https://ttraff.ru/pify?keyword=100+approximation+questions+pdf'. Additionally, the 'PDF_SEO_LINK_FARM' heuristic indicates a large number of external links, suggesting a tactic to distribute malicious content or manipulate search engine results. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic further supports the lure-based attack pattern. No scripts were extracted, and the document body is heavily obfuscated, but the link analysis is sufficient to determine the malicious intent.
Heuristics 4
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=100+approximation+questions+pdf
- http://files.smithandsonlandscapes.com/uploads/1/3/0/7/130776401/kulujoxaburuno.pdf
- http://files.kaimalamarina.org/uploads/1/3/0/9/130969300/letimir.pdf
- http://files.rawseries.org/uploads/1/3/1/6/131606605/9964294.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kiragin.pdf
- https://cdn.shopify.com/s/files/1/0431/8982/9800/files/tapeb.pdf
- https://cdn.shopify.com/s/files/1/0435/4641/1160/files/the_story_of_my_life_summary.pdf
- https://cdn.shopify.com/s/files/1/0430/9604/7783/files/bridging_the_gap_13th_edition.pdf
- https://cdn.shopify.com/s/files/1/0430/8051/5745/files/33069416250.pdf
- https://cdn.shopify.com/s/files/1/0437/7195/3301/files/pasuv.pdf
- https://cdn.shopify.com/s/files/1/0429/0389/6230/files/jozuxaxa.pdf
- https://cdn.shopify.com/s/files/1/0427/8799/5807/files/kutogog.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31931154882.pdf
- https://cdn.shopify.com/s/files/1/0433/6150/1349/files/mathematical_methods_for_physicists_arfken.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000058f3.bind941e4e0d9d64e73b34d779968633e6492227e31ba3291511831666c6a5d9bd4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x58F3 | 5448 bytes |
font_01_sfnt_off00006b5c.bin7a339b6b12bf303f1b92a1b5b97bc0444607730e18227eaca750cb617983514f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6B5C | 10360 bytes |
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