MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a large number of embedded links, with one heuristic specifically identifying it as a 'PDF link farm'. The primary malicious URL, 'https://ttraff.cc/pify?keyword=gastrointestinal+system+pdf', is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and a URL that appears to be part of the link farm, suggesting a delivery mechanism for further 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.cc/pify?keyword=gastrointestinal+system+pdf
- http://ganuzoveg.musicwithmskrauss.com/uploads/1/3/2/6/132696483/9835991.pdf
- http://ribetiz.sarahavalia.com/uploads/1/3/0/9/130969723/zivig.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kosetomamevisired.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43561311815.pdf
- https://cdn.shopify.com/s/files/1/0430/8549/6482/files/58209404301.pdf
- https://cdn.shopify.com/s/files/1/0435/1302/0570/files/74354994675.pdf
- https://cdn.shopify.com/s/files/1/0430/2068/1377/files/rezobofakegi.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mosagewenusuwaguxizekud.pdf
- https://cdn.shopify.com/s/files/1/0432/3049/4882/files/80100562098.pdf
- https://cdn.shopify.com/s/files/1/0429/8424/3351/files/88939993534.pdf
- https://cdn.shopify.com/s/files/1/0439/7488/5534/files/74085649629.pdf
- https://cdn.shopify.com/s/files/1/0434/2313/7957/files/magigas.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_off0000bdab.bina66492325f0e8971f0b021632f03428fb4e84fefb90979aeaee228e84dae36e2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBDAB | 5320 bytes |
font_01_sfnt_off0000cfbc.bin6f0c58318e1b9fbeef21441c46b5928efa4a381f3045f282eacae689c74b2c2c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCFBC | 10544 bytes |
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