MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded links, including one pointing to a known malicious redirector (ttraff.link) and another to a link farm (luvumape.weebly.com). The document body, though heavily obfuscated, contains text suggesting it is a 'letter of recommendation template', a common lure for phishing or malware delivery. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm indicates an attempt to distribute malicious content.
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.link/123?keyword=letter+of+recommendation+template+for+word
- https://luvumape.weebly.com/uploads/1/3/4/4/134438520/naluzefatuki.pdf
- https://cdn-cms.f-static.net/uploads/4367952/normal_5f883ea8ae1ae.pdf
- https://cdn-cms.f-static.net/uploads/4388046/normal_5f9e1cf616f98.pdf
- https://cdn-cms.f-static.net/uploads/4385421/normal_5f95b2686bff3.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0502/6729/1816/files/90114602442.pdf
- https://cdn.shopify.com/s/files/1/0499/3122/3208/files/81759300821.pdf
- https://cdn.shopify.com/s/files/1/0483/5291/9703/files/human_anatomy_and_physiology_9th_edition_ebook.pdf
- https://cdn.shopify.com/s/files/1/0480/1150/9919/files/dejapi.pdf
- https://cdn.shopify.com/s/files/1/0501/7953/9134/files/sotisarasa.pdf
- https://cdn.shopify.com/s/files/1/0507/9505/3224/files/ribituneg.pdf
- https://cdn.shopify.com/s/files/1/0504/3368/7750/files/primary_school_teaching_methods.pdf
- https://s3.amazonaws.com/fizup/awkward_moment_card_game.pdf
- https://cdn.shopify.com/s/files/1/0431/9074/7295/files/ddr_german_shepherd_cost.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/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00007aa9.bin74d157231030ae4ab07eebafb89df9ab6d35e115cea61114c2bc07c7610be703 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7AA9 | 5156 bytes |
font_01_sfnt_off00008c35.binefef2dc27990562645653729fde701b6c65c8c17ee08431b75e0913d0f5cc6e9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8C35 | 10264 bytes |
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