MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a malicious redirector link that is disguised as a free Spotify APK download. The link leads to 'ttraff.ru', which is known for malicious redirection. The document body and embedded URLs further support this, with a large number of links pointing to various PDF files, likely part of a link farm to improve SEO for malicious content. 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=spotify+free+apk+old+version
- http://files.supportingpresence.com.au/uploads/1/3/1/8/131856257/nuzowo.pdf
- https://cdn.shopify.com/s/files/1/0434/7042/2180/files/common_core_math_worksheets_3rd_grade.pdf
- https://cdn.shopify.com/s/files/1/0430/8919/9268/files/97152813866.pdf
- https://cdn.shopify.com/s/files/1/0433/0009/4112/files/229258309.pdf
- https://cdn.shopify.com/s/files/1/0431/1102/2756/files/knock_knees_exercises.pdf
- https://cdn.shopify.com/s/files/1/0440/7522/1144/files/nelson_grade_12_biology_textbook_answers.pdf
- https://cdn.shopify.com/s/files/1/0435/4434/6792/files/donatiguzotipefilujizu.pdf
- https://cdn.shopify.com/s/files/1/0429/6710/5687/files/8694410896.pdf
- https://cdn.shopify.com/s/files/1/0431/4827/9957/files/89703125519.pdf
- https://cdn.shopify.com/s/files/1/0429/3722/1276/files/87983271536.pdf
- https://cdn.shopify.com/s/files/1/0435/7318/2625/files/anarchism_and_moral_philosophy.pdf
- https://cdn.shopify.com/s/files/1/0430/8670/8893/files/78858258241.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_off00005eb4.bin0d4099b76b6226d771d788d46e1c8209a41911c6053a53ae2ac41bcd3820a6ab |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5EB4 | 5364 bytes |
font_01_sfnt_off00007110.bin1ec16700c61156a6fa4c135c3483ebeae09af65bb4330fe8ce5002d640e9faa2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7110 | 10364 bytes |
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