MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains a lure related to a 'Thomas calculus 13th edition solution manual' which directs users to a malicious redirector. The heuristic firings indicate the PDF is a malicious redirector and part of a link farm, likely designed to host or distribute further malicious content. The primary malicious IOC is the ttraff.com URL, which is part of a social engineering tactic to trick users into clicking through to potentially harmful sites.
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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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.com/pify?keyword=thomas+calculus+13th+edition+solution+manual+pdf In PDF document text
- http://files.keetoncorrections.com/uploads/1/3/1/8/131856331/05aa903bd.pdfIn PDF document text
- http://files.forestcityfarms.com/uploads/1/3/2/6/132682745/6574432.pdfIn PDF document text
- http://files.applesandspindles.com/uploads/1/3/2/8/132814305/pubejo.pdfIn PDF document text
- http://files.ellismedlibrary.org/uploads/1/3/1/1/131164314/dasirajipubule.pdfIn PDF document text
- http://files.dianabradfordart.com/uploads/1/3/1/4/131483069/2002958.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/1/0431/9143/5422/files/4564441189.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/10699911966.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/7442/7806/files/wazigavep.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2795/4853/files/7612445088.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/8125/3535/files/42199940609.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1126/7990/files/5433177665.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3866/3079/files/99443821572.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1231/6584/files/25654224253.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2450/6266/files/pojipiwobokidemafiw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/3055/9390/files/kisaviwarunukuvejetoja.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4537/1549/files/88124721126.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/4233/3087/files/nemerejivabo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6057/5912/files/titobebejamojiwuxuwig.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_off000069a7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x69A7 | 5464 bytes |
SHA-256: b9990583e58724dbfae7f63c6f0c6dd3a65e045ab9212ece1dcefa36fca0c0a6 |
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font_01_sfnt_off00007c1a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7C1A | 11464 bytes |
SHA-256: d3551912001fe282ca6e88c1c6e0a0dbdc23d133ec8088f511ba2563f0bccc30 |
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