MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a link to a known malicious redirector, ttraff.cc, disguised as an exam reviewer. The document body and heuristics indicate a large number of embedded links, many pointing to benign Shopify domains, likely part of a link farm to improve search engine ranking for malicious content. The primary malicious URL is https://ttraff.cc/wb?keyword=let%20exam%20reviewer%20pdf%202019, which serves as the initial lure.
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.cc/wb?keyword=let%20exam%20reviewer%20pdf%202019
- http://files.gleisinc.com/uploads/1/3/1/6/131637482/jenoda.pdf
- http://files.myfavoritehaunting.com/uploads/1/3/0/9/130969775/3425145.pdf
- http://files.straightedgewindowtinting.com/uploads/1/3/1/8/131857916/99f34dd6.pdf
- https://cdn.shopify.com/s/files/1/0431/4421/6730/files/a_companion_to_forensic_anthropology.pdf
- https://cdn.shopify.com/s/files/1/0433/6159/9656/files/zanogaguzu.pdf
- https://cdn.shopify.com/s/files/1/0429/1185/8855/files/embroidery_for_dummies.pdf
- https://cdn.shopify.com/s/files/1/0435/0532/0088/files/66796114082.pdf
- https://cdn.shopify.com/s/files/1/0439/4529/6027/files/fakepawevuwodexizetusirok.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62374455636.pdf
- https://cdn.shopify.com/s/files/1/0429/7441/2949/files/42686534594.pdf
- https://cdn.shopify.com/s/files/1/0432/0601/7186/files/jotupipiwasajubufemorebu.pdf
- https://cdn.shopify.com/s/files/1/0434/3287/0044/files/apache_commons_cli_example.pdf
- https://cdn.shopify.com/s/files/1/0434/6295/1062/files/quicken_2015_manual.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_off00009156.bin94f367e576e5b81b43cff9d021e527ea7e80e57e04bd943994e01a9132b707cc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9156 | 5620 bytes |
font_01_sfnt_off0000a484.binb44e39a6749f047a37708d95749ac68beeb3e6a3afa4e4310ebdc9b083f5fc1c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA484 | 12416 bytes |
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