MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
T1059.001 PowerShell
The PDF contains a link farm heuristic, indicating a large number of outbound links. One of these links, 'https://ttraff.ru/pify?keyword=calculations+in+chemistry+dahm+2nd+edition+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to the same URL, suggesting it's the primary lure. The file is a PDF generated by wkhtmltopdf, which is often used to create documents that mimic legitimate content to trick users into clicking malicious links.
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=calculations+in+chemistry+dahm+2nd+edition+pdf In PDF document text
- http://files.amorrusticarts.com/uploads/1/3/0/9/130969623/218d3a.pdfIn PDF document text
- http://rekeniton.mickylynnexecutivetouch.com/uploads/1/3/1/3/131380429/fexebotidopo_manakepeb_bimizejuwoxu.pdfIn PDF document text
- http://files.jansceramic.com/uploads/1/3/0/8/130813827/c8d5c3.pdfIn PDF document text
- http://files.cavitesports.com/uploads/1/3/0/7/130775137/dotupopeve.pdfIn PDF document text
- http://duzuw.giftsrwanda.org/uploads/1/3/0/9/130969204/217c4f3.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/1/0428/1021/2518/files/36974542638.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5276/9192/files/john_deere_x475_service_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5287/6455/files/74544819365.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6226/2936/files/suraxofoxatamewefawifuso.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2103/1832/files/back_bonding_concept.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3572/8794/files/80769778001.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8734/0454/files/subav.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4141/4552/files/notebedatinekuvo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4189/0208/files/jebode.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4578/1665/files/69717988232.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8976/5276/files/lafemumefis.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0958/0967/files/weather_mobile_al_hourly.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4211/1650/files/9986784296.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_off00004624.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4624 | 5532 bytes |
SHA-256: 5f986b7004da4e4ee14d703a62c595ecf0857b56d4ba47c90d286f189065dabf |
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font_01_sfnt_off000058cb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x58CB | 9736 bytes |
SHA-256: d1aa93041240bfe66de7d30d5889995757edb1ea2434a2377fe69cff059f9eb5 |
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