MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the critical heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The primary malicious URL is https://ttraff.ru/pify?keyword=critical+thinking+activities+for+higher+education+pdf. The document body, though heavily obfuscated, contains this URL and numerous other links hosted on cdn.shopify.com, suggesting a lure to disguise the malicious redirector. The ML classifier also strongly indicated maliciousness.
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.ru/pify?keyword=critical+thinking+activities+for+higher+education+pdf
- http://files.tacmit.com/uploads/1/3/1/4/131407138/e2ff4e8c362.pdf
- http://files.erinmakesstuff.com/uploads/1/3/1/4/131453106/jemagulo.pdf
- http://files.eileefahnestock.com/uploads/1/3/1/3/131384559/90becb.pdf
- https://cdn.shopify.com/s/files/1/0429/9338/5633/files/98755395536.pdf
- https://cdn.shopify.com/s/files/1/0432/2587/4600/files/50838746081.pdf
- https://cdn.shopify.com/s/files/1/0438/5744/5029/files/novipul.pdf
- https://cdn.shopify.com/s/files/1/0431/9795/6256/files/jizapavijofuvafutemiva.pdf
- https://cdn.shopify.com/s/files/1/0432/9360/6048/files/origen_del_idioma_espaol.pdf
- https://cdn.shopify.com/s/files/1/0431/1249/7305/files/lisbon_subway_map.pdf
- https://cdn.shopify.com/s/files/1/0431/7921/2959/files/kavobedo.pdf
- https://cdn.shopify.com/s/files/1/0431/2412/9946/files/6222567093.pdf
- https://cdn.shopify.com/s/files/1/0429/4141/5580/files/51429288947.pdf
- https://cdn.shopify.com/s/files/1/0437/5927/2090/files/39772404374.pdf
- https://cdn.shopify.com/s/files/1/0428/2299/2028/files/mugatovosiruniruzizosof.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000064aa.bin4a38905df0edc63b154dd3d6f1421004f2f2f753f601d7feb6dd8f67f0387a5a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x64AA | 5444 bytes |
font_01_sfnt_off00007728.bin657ff612aeeeca3f11dc3e710c236063bc0d01ee0fc1008d880a68e567e98abd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7728 | 10300 bytes |
font_02_sfnt_off00009a0d.binff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9A0D | 4324 bytes |
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