MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to be related to academic lecture notes, suggesting a lure. The presence of a link farm and a malicious redirector indicates an attempt to drive traffic to potentially harmful sites, possibly for SEO manipulation or to host further malicious content.
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=second+law+of+thermodynamics+lecture+notes+pdf
- http://files.dudleysafes.com/uploads/1/3/1/3/131398419/025eea.pdf
- http://files.whistlepigsaloon.com/uploads/1/3/0/8/130874102/kodaru.pdf
- http://files.clinicalalliancenetwork.com/uploads/1/3/1/4/131437822/xapodesapeboru.pdf
- http://files.nicktroehler.com/uploads/1/3/0/7/130738823/nideto_merubo_busabujatupun_firerewevu.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75130531250.pdf
- https://cdn.shopify.com/s/files/1/0433/0343/6446/files/81345746347.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41732402988.pdf
- https://cdn.shopify.com/s/files/1/0438/2975/6066/files/funuvotebez.pdf
- https://cdn.shopify.com/s/files/1/0431/4952/5156/files/waxesazuvijakilodoxa.pdf
- https://cdn.shopify.com/s/files/1/0434/5724/9430/files/fupixixipidojituli.pdf
- https://cdn.shopify.com/s/files/1/0431/4716/5850/files/guxakuluvetubijebujobo.pdf
- https://cdn.shopify.com/s/files/1/0435/9038/5821/files/kigofunosaxiribil.pdf
- https://cdn.shopify.com/s/files/1/0435/8127/6319/files/19221787332.pdf
- https://cdn.shopify.com/s/files/1/0434/8700/2790/files/14142281848.pdf
- https://cdn.shopify.com/s/files/1/0428/5687/4151/files/faduzomaxufe.pdf
- https://cdn.shopify.com/s/files/1/0435/2606/2239/files/25597853120.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_off00005418.bin9aed70ea905c38bf3f2bfdae14cec0a0290d98f61fb90c333dc96dca1093a706 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5418 | 5572 bytes |
font_01_sfnt_off000066e7.bind5004684873495e3c0e069530f68f5071cefd5b736fa399cfd89126696cb6ec6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x66E7 | 9824 bytes |
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