MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded URLs, many of which point to a redirector service (ttraff.ru) that is known to host malicious content. The document body, though heavily obfuscated, contains references to these URLs, suggesting a deliberate attempt to lure users to malicious sites under the guise of providing PDF documents. 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=thinkertoys+by+michael+michalko+pdf
- http://files.jhmtva.com/uploads/1/3/0/7/130739704/nurewifinimemelox.pdf
- http://files.entropicj.com/uploads/1/3/2/6/132695300/850b8f.pdf
- http://files.affinity-artwork.com/uploads/1/3/1/8/131856333/2db9a57eab5.pdf
- http://files.diled.eu/uploads/1/3/0/7/130775229/3528953.pdf
- https://cdn.shopify.com/s/files/1/0428/4288/2215/files/55420355966.pdf
- https://cdn.shopify.com/s/files/1/0430/6495/0945/files/58330585564.pdf
- https://cdn.shopify.com/s/files/1/0435/6630/1343/files/doggy_style_emoji.pdf
- https://cdn.shopify.com/s/files/1/0432/4950/0315/files/xalarefajog.pdf
- https://cdn.shopify.com/s/files/1/0435/8393/0527/files/denetararoz.pdf
- https://cdn.shopify.com/s/files/1/0434/6295/1074/files/wuwuwisuge.pdf
- https://cdn.shopify.com/s/files/1/0433/7614/8643/files/79059682388.pdf
- https://cdn.shopify.com/s/files/1/0428/2623/6063/files/depogizakewenapoki.pdf
- https://cdn.shopify.com/s/files/1/0432/1217/7572/files/53951641179.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_off00005fe4.bind0fa387f03ecc13e79864df22d0d2a3d7a48ac73f20a31f8455e6048006e0f3a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5FE4 | 5648 bytes |
font_01_sfnt_off000072e8.bina392188a2905d76fff175e8c1c2b3df93d9f70718d3f2577090cd6f3d0b7ab8d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x72E8 | 9992 bytes |
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