MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting it's designed to lead users to potentially harmful content. The presence of a 'download button' lure further supports a phishing or malware distribution motive. The document body, though heavily obfuscated, contains metadata from wkhtmltopdf, indicating it was likely generated programmatically to host these links.
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=essentials+of+clinical+cardiology+pdf In PDF document text
- http://files.karenapps.com/uploads/1/3/1/8/131872048/c9691f.pdfIn PDF document text
- http://files.jennyharrison-author.com/uploads/1/3/0/7/130775677/5549204.pdfIn PDF document text
- http://files.hawaiistateptsa.org/uploads/1/3/2/6/132682040/dojirobodos.pdfIn PDF document text
- http://files.peachfuzztranslations.com/uploads/1/3/0/9/130969986/b58c0c94bf0.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/1/0430/4722/3458/files/xukijadarofutisilesuxa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6497/5765/files/35010499232.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0363/3051/files/14311708912.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8037/5704/files/85191408062.pdfIn PDF document text
- https://zodizijemas.files.wordpress.com/2020/07/xadoxixojatefav.pdfIn PDF document text
- https://tovotuwag.files.wordpress.com/2020/06/gigiresatuwex.pdfIn PDF document text
- https://zitipon.files.wordpress.com/2020/06/4154804693.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2609/6036/files/99096355043.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7003/7911/files/71581134190.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/0333/1231/files/vutunuxogamixaba.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bebupikisanomagidilu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9812/8036/files/47861006325.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/8920/6174/files/56801233093.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/8347/1771/files/vokinumumuwixinijazapobeg.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3309/1480/files/vejejoposavese.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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000bee8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBEE8 | 5172 bytes |
SHA-256: eec251459b654c63d7da8e2443e51002a761b6b82c124bb99b4fcd7768529012 |
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font_01_sfnt_off0000d092.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD092 | 10296 bytes |
SHA-256: 0cdf3041c41455128bf3a7aaf43b68b6baf4c7a69a5b9e4802e552e26caecd4f |
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