MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised with text suggesting it leads to 'Biochemistry test review answers'. The PDF also contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm or SEO manipulation tactic. The ML classifier strongly flagged this PDF as malicious.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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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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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=biochemistry+test+review+answers
- http://files.progressiveair.org/uploads/1/3/2/6/132681536/niwoluwumige-wosixoma-nanopimew-zijapopi.pdf
- http://files.artbyhansgeist.com/uploads/1/3/1/4/131437984/jakedanonowejiti.pdf
- http://files.johnrichardsonimages.com/uploads/1/3/0/7/130776592/3522716.pdf
- http://giresigi.theramblingrebels.com/uploads/1/3/1/3/131383613/fafonixezuxixipiga.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0434/7101/2006/files/pgyer_movie_box.pdf
- https://cdn.shopify.com/s/files/1/0429/2476/9436/files/90481786537.pdf
- https://cdn.shopify.com/s/files/1/0433/1782/1605/files/82513519412.pdf
- https://cdn.shopify.com/s/files/1/0432/5035/2296/files/n_attristez_pas_le_saint_esprit.pdf
- https://cdn.shopify.com/s/files/1/0436/9743/8875/files/miretop.pdf
- https://cdn.shopify.com/s/files/1/0433/2286/7880/files/34981724941.pdf
- https://cdn.shopify.com/s/files/1/0435/7799/9519/files/kobesolinezed.pdf
- https://cdn.shopify.com/s/files/1/0427/7141/5196/files/31347474212.pdf
- https://cdn.shopify.com/s/files/1/0431/7118/4794/files/lunopolin.pdf
- https://cdn.shopify.com/s/files/1/0439/0918/5688/files/liquid_waste_management_lecture_notes.pdf
- https://cdn.shopify.com/s/files/1/0433/5537/3720/files/93626728625.pdf
- https://cdn.shopify.com/s/files/1/0431/4519/9777/files/94860752422.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00004c72.bin958e175850857c31d9a38351ae62c4d6a6def708f0d611cb75826a752e98149c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4C72 | 5308 bytes |
font_01_sfnt_off00005e6c.binf34abe03c223dd7c112be2d1e23b6cf56285ef8e3d4cdec555a957a38ff307f6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5E6C | 9724 bytes |
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