MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, identified as a link farm. One of these links points to a known malicious redirector, ttraff.ru. The document body, though heavily obfuscated, contains references to the redirector URL and other PDF files hosted on various domains, suggesting a coordinated effort to distribute malicious content or engage in SEO poisoning. 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=ashrae+standard+34+pdf+espa%25C3%25B1ol
- http://files.zulemasummerfield.net/uploads/1/3/1/8/131856290/8c1a62e47513.pdf
- http://xoteba.mondulkiritour.com/uploads/1/3/0/9/130969747/fde6d62ce6b14c.pdf
- http://nawore.vazpintotennis.com/uploads/1/3/0/9/130968917/7761093.pdf
- http://files.newvinylart.com/uploads/1/3/1/4/131409526/madan-wevejojib-lovefute-bibimi.pdf
- http://valus.jwaycott.com/uploads/1/3/1/3/131383791/wowifijatosebuz.pdf
- https://cdn.shopify.com/s/files/1/0434/0449/2957/files/sisajanosuvufu.pdf
- https://cdn.shopify.com/s/files/1/0428/4016/2467/files/92710649548.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94662163826.pdf
- https://cdn.shopify.com/s/files/1/0440/6162/2437/files/zuwilebebixosogo.pdf
- https://cdn.shopify.com/s/files/1/0428/9436/0743/files/80672939662.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/povumad.pdf
- https://cdn.shopify.com/s/files/1/0438/1881/1552/files/37301015033.pdf
- https://cdn.shopify.com/s/files/1/0430/8333/3786/files/xorugus.pdf
- https://cdn.shopify.com/s/files/1/0431/8098/2432/files/26592786287.pdf
- https://cdn.shopify.com/s/files/1/0430/6134/6466/files/faluzodiripijuwoworetisa.pdf
- https://cdn.shopify.com/s/files/1/0431/6954/6395/files/52975337394.pdf
- https://cdn.shopify.com/s/files/1/0437/2784/7576/files/53809937544.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_off00006949.bin57dc8644549ea852b1788de975ff935845c9c15b6a54197b57a2954d915623fd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6949 | 5580 bytes |
font_01_sfnt_off00007bff.bin1102c8bf6f04f7c41a6f4e6ec7faaa83bd03b3db3f2dcb08023bbac980deae0a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7BFF | 10696 bytes |
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