MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, disguised as 'algebraic structures lecture notes pdf', redirects to a known malicious redirector at ttraff.cc. This indicates a social engineering attempt to lure users to malicious content. No scripts were extracted, but the PDF structure and embedded links strongly suggest a phishing or redirection attack.
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.cc/pify?keyword=algebraic+structures+lecture+notes+pdf
- http://tusos.mtncoils.co.uk/uploads/1/3/1/4/131406427/vobuzo.pdf
- https://cdn.shopify.com/s/files/1/0432/7089/7824/files/33075585301.pdf
- https://cdn.shopify.com/s/files/1/0438/1055/4016/files/paul_krugman_microeconomics_3rd_edition.pdf
- https://cdn.shopify.com/s/files/1/0433/8312/8214/files/vovepumupu.pdf
- https://cdn.shopify.com/s/files/1/0454/2342/7752/files/green_smoothie_recipes_for_weight_loss.pdf
- https://cdn.shopify.com/s/files/1/0434/8398/8125/files/scholastic_aptitude_test_philippines.pdf
- https://cdn.shopify.com/s/files/1/0430/4361/8969/files/allopathic_medicine_book_in_bengali.pdf
- https://cdn.shopify.com/s/files/1/0427/6482/8838/files/8906744843.pdf
- https://cdn.shopify.com/s/files/1/0428/7250/4483/files/somakutarugajuwevedesif.pdf
- https://cdn.shopify.com/s/files/1/0436/9842/1913/files/toyota_camry_haynes_repair_manual.pdf
- https://cdn.shopify.com/s/files/1/0437/1388/8424/files/90676864447.pdf
- https://cdn.shopify.com/s/files/1/0429/9581/0455/files/xotemaso.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/
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000044d4.bine24aa62f38b374ba69c7d751f4ed77a7c0b6d3fbd377038be7f99ab103b5e161 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x44D4 | 5452 bytes |
font_01_sfnt_off00005764.binef317a1b2409404061e6e3a2f41b50bc5a929944cd7094d1e9735befe3944d74 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5764 | 9492 bytes |
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