MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This redirector is likely used to obscure the final destination and potentially deliver a malicious payload. The document body, though heavily obfuscated, contains the same redirector URL and several Shopify-hosted PDF links, suggesting a link farm or phishing lure for academic materials. No scripts were extracted, but the presence of malicious redirectors and a large number of external links indicates a phishing or malware distribution attempt.
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=lehninger+pdf+biochemistry In PDF document text
- http://files.beatbettingtips.com/uploads/1/3/1/1/131164063/getuvujapi-gabixemubumabi.pdfIn PDF document text
- http://natexizi.zevkali.com/uploads/1/3/1/3/131383483/tunirijukag.pdfIn PDF document text
- http://files.stjeromelibrary.org/uploads/1/3/2/6/132695372/doxaw.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0432/6319/7337/files/78507445285.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7141/5196/files/11822772350.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1451/9973/files/voruwamagomef.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5168/7837/files/rglement_d_ordre_intrieur_de_l_assemble_nationale_de_la_rdc.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0210/1923/files/julufuwepafu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2155/7150/files/49796415798.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7929/3338/files/69093860578.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2050/1660/files/crown_dc300a_service_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/1139/8041/files/jetatosebukixuzisane.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3488/5789/files/7317161262.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3970/9605/files/microsoft_excel_formulas_cheat_sheet.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000634f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x634F | 5296 bytes |
SHA-256: ad9d647997f3613c1530a90de5743d091948171662a0959d5a39aea8844ff1b2 |
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font_01_sfnt_off0000751f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x751F | 9868 bytes |
SHA-256: 44af7eae86788e36411c2f2b14ae1df3e059ea3b64282dcb2f195ca4951d73eb |
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font_02_sfnt_off000096e0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x96E0 | 4324 bytes |
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f |
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