MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
This PDF document contains a link farm designed to appear as a career assessment test, ultimately redirecting users to malicious infrastructure at 'ttraff.club'. The ML classifier strongly indicated maliciousness, and the PDF structure includes numerous external links, many hosted on 'static.usrfiles.com', suggesting a coordinated effort to distribute malicious content. The primary malicious IOC is the redirector URL.
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.club/wix?keyword=career+assessment+test+pdf
- https://static.usrfiles.com/ugd/ae059d_d1f81bd9ecb5453cbfad5033fdc12586.pdf
- https://static.usrfiles.com/ugd/b56239_3d1b541e8df54c459004d612514e0908.pdf
- https://static.usrfiles.com/ugd/74a852_42b970ed43df4e2ba54efe42cb3542d7.pdf
- https://static.usrfiles.com/ugd/60933b_90a4b20d415c4ad0a216df7b38692efa.pdf
- https://cdn.shopify.com/s/files/1/0463/2671/0432/files/flute_sheet_music_pop.pdf
- https://cdn.shopify.com/s/files/1/0429/0609/1673/files/roblox_exploits_for_mac.pdf
- https://cdn.shopify.com/s/files/1/0435/2117/9802/files/economic_structural_adjustment_programme_in_zimbabwe.pdf
- https://cdn.shopify.com/s/files/1/0435/2881/4746/files/risagaxeb.pdf
- https://cdn.shopify.com/s/files/1/0433/8669/9925/files/barron_s_regents_geometry.pdf
- https://cdn.shopify.com/s/files/1/0430/0229/8521/files/72513644911.pdf
- https://static.usrfiles.com/ugd/c81504_11064fb6b6d84321ad20bdca0b7ab5d4.pdf
- https://static.usrfiles.com/ugd/c618e9_c50b396b9bf641558b551bd63e5c4330.pdf
- https://static.usrfiles.com/ugd/fa6f14_a84ac96d579c41558a8c3294b51ce56b.pdf
- https://static.usrfiles.com/ugd/5d2cf3_e52a1372b39442d287d4cfad67aea20f.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_off00006c95.bin8fb66a8b38689d9b0a0193c5e1b8e1e5d42cd4ea8b76beab7389894b2934247c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6C95 | 5060 bytes |
font_01_sfnt_off00007db2.binc723ddf74566ec65ed86762dfbb22751ace864df089add16086110dfa15cd29e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7DB2 | 10936 bytes |
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