MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document contains a large number of embedded links, many of which point to a redirector service (ttraff.ru) that is known to host malicious content. The document body and embedded links suggest a lure to download further malicious content disguised as academic papers. The ML classifier strongly indicated maliciousness, and the presence of numerous external links supports a link farm or redirection attack pattern.
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=operational+amplifiers+theory+and+design+pdf
- http://files.logcabinwa.org/uploads/1/3/1/0/131071043/pufupomu_nimub_kozuleroluzil.pdf
- http://files.lighthousetravel.org/uploads/1/3/2/6/132695805/pulexuvew.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0430/7589/5450/files/dabafepafajidorogupaba.pdf
- https://cdn.shopify.com/s/files/1/0429/9282/8579/files/21879206043.pdf
- https://cdn.shopify.com/s/files/1/0428/1345/6550/files/3582152482.pdf
- https://cdn.shopify.com/s/files/1/0448/4136/9761/files/baladi_bread_nutrition_information.pdf
- https://cdn.shopify.com/s/files/1/0436/0008/5160/files/80372365610.pdf
- https://cdn.shopify.com/s/files/1/0441/0313/9480/files/85426025692.pdf
- https://cdn.shopify.com/s/files/1/0431/5122/9089/files/77467997412.pdf
- https://cdn.shopify.com/s/files/1/0434/5312/0664/files/nazuzobolozogadawufotago.pdf
- https://cdn.shopify.com/s/files/1/0432/0080/7070/files/kikurosufovumefug.pdf
- https://cdn.shopify.com/s/files/1/0428/5091/0364/files/meters_to_inches_conversion_table.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/88406012193.pdf
- https://cdn.shopify.com/s/files/1/0433/9249/9877/files/72839145238.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_off00005f17.bin65c38dd98349114967601269e93709fd012781cf2de3b44108a28965297cac5d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5F17 | 5584 bytes |
font_01_sfnt_off000071e2.bin7c3b87ff5396bca1c427677791e39bf08d974c09d9d198b22b371580a52a3c52 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x71E2 | 15376 bytes |
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