MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link disguised as a document about the 'third law of thermodynamics' which redirects to a malicious URL on 'ttraff.ru'. This heuristic, combined with the ML classifier's high confidence, indicates a phishing or redirection attempt. The PDF also hosts a large number of external links, many pointing to Shopify, suggesting a link farm used for SEO poisoning or to obscure the final malicious destination.
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=third+law+of+thermodynamics+pdf+nptel
- http://files.fiveanimalkenpo.com/uploads/1/3/0/7/130740180/kagew.pdf
- http://files.tersiaoosthuizen.com/uploads/1/3/1/6/131606027/2bc828.pdf
- http://files.homelesshaventv.com/uploads/1/3/0/8/130874102/47a2151b05eff.pdf
- https://cdn.shopify.com/s/files/1/0428/9685/1111/files/45486272589.pdf
- https://cdn.shopify.com/s/files/1/0432/0965/4440/files/95680984782.pdf
- https://cdn.shopify.com/s/files/1/0437/2050/7544/files/actos_de_comercio_colombia.pdf
- https://cdn.shopify.com/s/files/1/0428/9078/9020/files/renukofakegavoz.pdf
- https://cdn.shopify.com/s/files/1/0438/0049/4237/files/nirebajoduvojurifer.pdf
- https://cdn.shopify.com/s/files/1/0435/8737/1171/files/25999379359.pdf
- https://cdn.shopify.com/s/files/1/0435/1574/0312/files/sadutususujuxubomam.pdf
- https://cdn.shopify.com/s/files/1/0435/8311/1336/files/infiniti_g20_repair_manual.pdf
- https://cdn.shopify.com/s/files/1/0431/9484/3298/files/wixemezowemomidajudimal.pdf
- https://cdn.shopify.com/s/files/1/0432/7620/6238/files/tidawudux.pdf
- https://cdn.shopify.com/s/files/1/0430/4856/6941/files/past_perfect_simple_tense_exercises_with_answers.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_off000069df.binbc2eb6e36d9ade32cdeb87c0b56a761518cf01f2829155f20536b46bb229ede9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x69DF | 5540 bytes |
font_01_sfnt_off00007ca4.bin9fad37d68b8980bd03af19f10ae7d3dac94e8aab02d20ec18fdecece43c6a076 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7CA4 | 9816 bytes |
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