MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, many of which point to external resources, including a known malicious redirector. The document body and embedded links suggest a lure related to academic materials, likely intended to trick users into visiting malicious sites for phishing or malware downloads. The primary malicious URL identified is https://ttraff.ru/pify?keyword=cengage+chemistry+class+11+pdf.
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=cengage+chemistry+class+11+pdf In PDF document text
- http://jinemek.drdorsbbq.com/uploads/1/3/0/8/130874218/2916d5.pdfIn PDF document text
- http://files.jessiefield.com/uploads/1/3/1/4/131453724/30965.pdfIn PDF document text
- http://files.drywallsaltlakecity.com/uploads/1/3/2/7/132741385/fitesisufibuxot-sugelikafusumul-zavokorotujapij.pdfIn PDF document text
- http://febexu.alwaysmoreleadsaruba.com/uploads/1/3/1/4/131406749/9046600.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/1/0431/0306/0128/files/academic_journal_guide_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/6079/6318/files/can_t_help_falling_in_love_piano_guys.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1423/4017/files/79791973968.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1991/0820/files/85661731902.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6889/8966/files/academic_writing_free.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3906/4225/files/375698358.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/4868/8033/files/lalozuti.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/4061/1226/files/44201137891.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0939/9192/files/regedosud.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rumifagekesodurelakalon.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/1560/2337/files/zodota.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8846/1478/files/cycle_evolutif_de_schistosoma_haematobium.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9485/2252/files/sujiparawapajeziralebibo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/64989875230.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3633/4501/files/61494910045.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_off00005df3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5DF3 | 5628 bytes |
SHA-256: a6f4f0cc1c3af858b4cf1fdb8dcf739743b08d452ac75a3ec4a539ea74b4f05b |
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font_01_sfnt_off000070f2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x70F2 | 10516 bytes |
SHA-256: 21be03f46071c39384631d2cb6cba58755704b56121b8de699d20fe7e6414364 |
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