MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a prominent link disguised as an internship motivation letter, which redirects to a malicious URL (ttraff.com). This URL is identified as a known malicious redirector. The document also features a large number of external PDF links, many pointing to Shopify, suggesting a link farm or SEO manipulation tactic to obscure the malicious redirect. The ML classifier 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.com/pify?keyword=motivation+letter+for+internship+application+pdf
- http://files.tullyink.com/uploads/1/3/2/8/132815767/tebexagazifo-vuvixefitupu-ladit.pdf
- http://files.bobbylewislmt.com/uploads/1/3/1/8/131856698/gafaf-tobixumunobo-wigavokep.pdf
- http://mowuw.bagelanddeli.com/uploads/1/3/0/9/130969423/6332151.pdf
- http://files.blacksburgmiddlelibrary.com/uploads/1/3/2/6/132682745/duxamisor_xivid.pdf
- https://cdn.shopify.com/s/files/1/0429/0835/2679/files/prepositions_of_place_exercises_perfect_english_grammar.pdf
- https://cdn.shopify.com/s/files/1/0438/6678/3904/files/60980210537.pdf
- https://cdn.shopify.com/s/files/1/0436/7355/1001/files/2s_complement_calculator.pdf
- https://cdn.shopify.com/s/files/1/0452/0129/3461/files/a_k_jain_physiology_free_download.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49186839350.pdf
- https://cdn.shopify.com/s/files/1/0427/9032/2335/files/54562639592.pdf
- https://cdn.shopify.com/s/files/1/0437/4170/8453/files/tukokofiluvuvulifez.pdf
- https://cdn.shopify.com/s/files/1/0431/0577/9863/files/58140694987.pdf
- https://cdn.shopify.com/s/files/1/0438/3372/0992/files/knime_analytics_platform_architecture.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_off00006e11.bin56a847de50597939e538c88e20c6a3901d73577b38ce523447f41c6166364dc1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6E11 | 5308 bytes |
font_01_sfnt_off00008023.bind5ff520b7186dd3753c835c833319252c822b1cef5ece3da35bb8d0bc0032fff |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8023 | 10324 bytes |
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