MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. The document body, though partially garbled, includes text related to 'advanced flute solos free sheet music', suggesting a lure. The ML classifier strongly flagged this PDF as malicious, and the presence of a malicious redirector link indicates a phishing or malware distribution attempt.
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=advanced+flute+solos+free+sheet+music
- http://files.alphaeta-ucsf.org/uploads/1/3/2/6/132695525/gozuwaponotigifexap.pdf
- http://files.ncnats.org/uploads/1/3/1/3/131379249/278029.pdf
- https://cdn.shopify.com/s/files/1/0464/7596/8662/files/10807468236.pdf
- https://cdn.shopify.com/s/files/1/0433/3862/9275/files/aicte_handbook_2019-_20.pdf
- https://cdn.shopify.com/s/files/1/0431/1518/4277/files/statistical_quality_control_eugene_grant.pdf
- https://cdn.shopify.com/s/files/1/0428/5048/4390/files/engineering_drawing_handbook_hb7.pdf
- https://cdn.shopify.com/s/files/1/0433/0595/9588/files/how_to_change_password_on_mac.pdf
- https://cdn.shopify.com/s/files/1/0433/6805/4949/files/81807077622.pdf
- https://cdn.shopify.com/s/files/1/0431/4782/1205/files/66622482596.pdf
- https://cdn.shopify.com/s/files/1/0434/6032/9637/files/46176735939.pdf
- https://cdn.shopify.com/s/files/1/0428/9367/2604/files/67864688597.pdf
- https://cdn.shopify.com/s/files/1/0433/0012/6885/files/boiler_testing.pdf
- https://cdn.shopify.com/s/files/1/0434/9083/6632/files/45124407981.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lebalod.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_off00007055.bin11e422c05cfdbc640be2280ba5c998824d6c6d643d6352685c06c401b4a7c458 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7055 | 5312 bytes |
font_01_sfnt_off00008239.bine9b966256065951a216ca8b24028b845b2e508d53b7b392eb30bb81139e0f465 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8239 | 10352 bytes |
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