MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link farm designed to lure users to click on what appears to be a research paper. The primary malicious link, 'https://ttraff.ru/pify?keyword=fisher+statistical+methods+for+research+workers+pdf', redirects to a malicious site. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external links supports a phishing 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=fisher+statistical+methods+for+research+workers+pdf
- http://tejamime.faubionchoir.com/uploads/1/3/2/8/132814930/fixajowixaxapufinuxu.pdf
- http://files.koalasboutique.net/uploads/1/3/1/4/131409024/7473783.pdf
- http://files.classof68organization.com/uploads/1/3/1/8/131871622/fb2adc.pdf
- http://files.mskhor.com/uploads/1/3/2/6/132682570/fewogedawox-xabuguj-dajelenudunexo.pdf
- https://cdn.shopify.com/s/files/1/0431/4837/8280/files/wenalu.pdf
- https://cdn.shopify.com/s/files/1/0431/4100/5480/files/dark_souls_3_mage_build_guide.pdf
- https://cdn.shopify.com/s/files/1/0429/6740/0601/files/zobawopivedokofiguberi.pdf
- https://cdn.shopify.com/s/files/1/0432/9239/3640/files/poemas_de_amor_alfonsina_storni.pdf
- https://cdn.shopify.com/s/files/1/0437/7870/3518/files/91274756625.pdf
- https://cdn.shopify.com/s/files/1/0435/9208/9759/files/fufojirulid.pdf
- https://cdn.shopify.com/s/files/1/0433/3800/6686/files/41177822232.pdf
- https://cdn.shopify.com/s/files/1/0431/1403/7409/files/46994286372.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_off00004961.bin61f2abaa5b839be744810cab1ca5ba40633da6ddb8c8ceac3da9358ea23779e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4961 | 5508 bytes |
font_01_sfnt_off00005c0b.bin036db8d50225f1ad1db08606f26725ad99b4b6232cba043da380daf0daa46a57 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5C0B | 10112 bytes |
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