MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=alagappan+clinical+medicine+4th+edition+pdf'. This URL is embedded within the document's body, disguised as a link to a medical textbook. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains, likely for SEO manipulation or to obscure the malicious redirector. No scripts were extracted from this sample.
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.com/pify?keyword=alagappan+clinical+medicine+4th+edition+pdf In PDF document text
- http://files.northlittletonpromise.org/uploads/1/3/2/6/132682974/9290007.pdfIn PDF document text
- http://files.multiplicitycreations.com/uploads/1/3/2/7/132740278/5728887b8b1.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/1/0436/4890/9462/files/john_deere_135.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/2798/8634/files/59564268858.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9755/5093/files/34482430581.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31178329868.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5952/8355/files/javascript_slider_bar.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0459/5456/4255/files/8210992002.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2544/8615/files/immunization_record_ontario.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0128/2711/files/integration_of_trigonometric_functions_problems_and_solutions.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8580/0358/files/16097145570.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/4097/1674/files/perupulubapumiri.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0653/3525/files/bt_megastream_fault_reporting.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3459/0878/files/carmen_sandiego_game_windows_7.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000044c2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x44C2 | 5372 bytes |
SHA-256: d9001e02b5f7392704b3b106e0e66030a41469d02e860b46d036d954457e6d87 |
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font_01_sfnt_off000056e9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x56E9 | 9704 bytes |
SHA-256: a86de62718e2b079a6b4f112fe6aee00b200819e7caf82fc66aa5f1f89734037 |
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font_02_sfnt_off0000784c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x784C | 16152 bytes |
SHA-256: 58926b53c76d298f49891827f664a116c10da4e9d8d357835a3c6b51bc668427 |
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