MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=internship+acknowledgement+template'. This URL is presented within the document body, disguised as an internship acknowledgement template. The file also triggered a critical heuristic for a PDF SEO link farm, indicating a large number of outbound links, many of which are generated and potentially malicious. The ML classifier also strongly flagged this PDF as malicious.
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/wix?keyword=internship+acknowledgement+template
- https://static.usrfiles.com/ugd/30e015_4d259bb5c4644d5fa5ba0ab54626489c.pdf
- https://static.usrfiles.com/ugd/b8c837_cf7e75be42e84fb39461b4b2bf6d0847.pdf
- https://static.usrfiles.com/ugd/33a2e4_2909d49279fa4675ae7048b209a1f8ad.pdf
- https://static.usrfiles.com/ugd/1b8612_097cf579b8674f63af9960402a16e644.pdf
- https://static.usrfiles.com/ugd/d01287_2b2aa72c0cda469ba0cd76d4c8894229.pdf
- https://cdn.shopify.com/s/files/1/0429/3731/9590/files/tabanokuxati.pdf
- https://cdn.shopify.com/s/files/1/0432/5041/7827/files/tilenabulinu.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/talijofazejodo.pdf
- https://cdn.shopify.com/s/files/1/0432/2364/6365/files/barcelona_kit_15_16.pdf
- https://static.usrfiles.com/ugd/b8c837_cb6f0d2e3f224ffdbc54b9370b056c71.pdf
- https://static.usrfiles.com/ugd/60933b_1f1e0b93619a422db3b5f891488b42b6.pdf
- https://cdn.shopify.com/s/files/1/0429/1998/5319/files/nalaxi.pdf
- https://cdn.shopify.com/s/files/1/0427/7708/4070/files/88161826740.pdf
- https://cdn.shopify.com/s/files/1/0430/9401/6157/files/82648610955.pdf
- https://cdn.shopify.com/s/files/1/0430/5331/8298/files/pdf_to_word_converter_not_editable.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_off0000c9c5.bin94581a2c4e88b8f65f5bc446cf3d86cbb39105f5306d6e37964db65b99e631fb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC9C5 | 5580 bytes |
font_01_sfnt_off0000dca7.binae52f2f76342eb9e6a9ca36300552f39705e24153289bab48f1e4c02cc32a6ad |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDCA7 | 10040 bytes |
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