MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 User Execution: Malicious Link
T1059.001 PowerShell
The PDF contains a malicious redirector link disguised as a free textbook download. The link leads to ttraff.cc, which is known malicious infrastructure. The document also contains a large number of external PDF links, many hosted on Shopify, which is indicative of a link farm used for SEO poisoning or to obscure the final malicious destination. The heuristic 'SE_BROWSER_INSTALL_LURE' suggests a social engineering tactic to trick the user into installing something.
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.cc/pify?keyword=technical+drawing+with+engineering+graphics+15th+edition+pdf+free In PDF document text
- http://files.greensoundhightech.co.uk/uploads/1/3/0/7/130776511/5719532.pdfIn PDF document text
- http://files.nbabrothers.com/uploads/1/3/1/3/131383283/9219429.pdfIn PDF document text
- http://files.shadysideofthetracks.com/uploads/1/3/1/4/131406762/9744250.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/1/0433/0687/7080/files/7218161301.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/1877/8781/files/28905182090.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0450/1697/3476/files/collocation_dictionary.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1126/0062/files/fivexakeneg.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/4100/3432/files/19686806927.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3296/0409/files/d_d_5e_kobold_race.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7542/0835/files/33262023806.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9156/6493/files/formula_of_mean_median_mode.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/3412/2139/files/51652989968.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2705/4237/files/vubuzodarugaseziwux.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1734/6965/files/gajiwol.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/6644/2406/files/java_bubble_sorting.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3572/8794/files/jovizajiti.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_off0000869d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x869D | 5632 bytes |
SHA-256: f2750d4be8cda5dbd2c6cc95addb2c27ca7feae937925b7858de0c0603d6adcf |
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font_01_sfnt_off000099da.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x99DA | 10836 bytes |
SHA-256: fef536cf90ff94eb99327af559ced5115223bc8102d6dba852be8868dbf6f84b |
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