MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary redirector URL is 'https://ttraff.ru/pify?keyword=american+english+file+starter+pdf'. The document body also contains this URL, suggesting an attempt to lure users to a malicious site. The ML classifier strongly indicates maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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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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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=american+english+file+starter+pdf In PDF document text
- http://files.srwcmilwaukee.com/uploads/1/3/1/4/131453615/3663311.pdfIn PDF document text
- http://files.nbpsrc.ca/uploads/1/3/0/7/130740077/3622438.pdfIn PDF document text
- http://files.patdbuchananeportfolio.com/uploads/1/3/2/6/132695302/lumifokimotutokevez.pdfIn PDF document text
- http://jawud.baytalmosul.com/uploads/1/3/0/8/130874359/9885738.pdfIn PDF document text
- http://files.houstonprimaryschool.com/uploads/1/3/1/8/131856435/7834098.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/1/0429/6219/0499/files/cadbury_annual_report_2020_17.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2804/6233/files/30008320567.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4133/3147/files/13653479125.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6197/6994/files/65991702521.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2626/7806/files/40420568387.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6549/1107/files/stardew_valley_lucky_lunch.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5630/0186/files/48943004258.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3393/6547/files/14481051742.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/4256/0405/files/komuru.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/8649/4361/files/antenna_theory_analysis_and_design_4th_edition_free_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4166/8775/files/ropurebijujarimurug.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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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 |
|---|---|---|---|
stream_006_off000099aa.bin |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x99AA | 25784 bytes |
SHA-256: 6c2e2c239e3e01c4158261ff1ecaba86ccfb3964ef1d8e4424a830f99394d788 |
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font_00_sfnt_off0000632a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x632A | 5556 bytes |
SHA-256: 401b6814b95d99e1b5308b72689080102dfdb38bb79fa582576231ba08dac890 |
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font_01_sfnt_off000075d3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x75D3 | 10636 bytes |
SHA-256: b48b21dfddbae4d66dc3b8e3a333cf5dc519c02d641cbd7f0488a27026eea76c |
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