MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as "coding interview questions". The document also features a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic to distribute malicious content. The ML classifier 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=coding+interview+questions+narasimha+karumanchi
- http://files.westtexasguitarfestival.com/uploads/1/3/1/3/131398059/figotokolo.pdf
- http://ponusitiv.weruntheforest.co.nz/uploads/1/3/0/7/130775934/9213299.pdf
- http://files.ironbreedlemc.org/uploads/1/3/1/3/131382092/1892704.pdf
- http://romugaz.scinteck.com/uploads/1/3/2/6/132695578/bolibusuwo.pdf
- https://cdn.shopify.com/s/files/1/0435/7183/9135/files/33721445901.pdf
- https://cdn.shopify.com/s/files/1/0432/6975/0940/files/5764764678.pdf
- https://cdn.shopify.com/s/files/1/0431/4356/1373/files/98177532999.pdf
- https://cdn.shopify.com/s/files/1/0433/3279/6574/files/libro_de_absentismo_laboral.pdf
- https://cdn.shopify.com/s/files/1/0432/3095/3627/files/vadomemowugoxalanotofij.pdf
- https://cdn.shopify.com/s/files/1/0430/7730/4484/files/juzifemuju.pdf
- https://cdn.shopify.com/s/files/1/0435/1367/5930/files/arlington_library_fallout3.pdf
- https://cdn.shopify.com/s/files/1/0436/5221/9030/files/john_deere_sabre_manual.pdf
- https://cdn.shopify.com/s/files/1/0432/3088/8094/files/2728910520.pdf
- https://cdn.shopify.com/s/files/1/0437/1863/9771/files/firajipamer.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_off000057a8.bina047e36a73f7bf687e4cdf332d78b1f6195479178f1c937f331818bb944b37d2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x57A8 | 5568 bytes |
font_01_sfnt_off00006a76.bin02c1507b096ac927f8a2811ab436a2ce6c54c9f80eccc299367b5dc7470e7128 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6A76 | 9832 bytes |
font_02_sfnt_off00008c29.bin05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8C29 | 4324 bytes |
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