MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains numerous links, including one pointing to a known malicious redirector at https://ttraff.ru/wb?keyword=ielts%20writing%20samples%20band%209%20pdf. This suggests a phishing or scam attempt, likely using the guise of IELTS writing samples to entice clicks. The ML classifier strongly supports the malicious nature of this PDF.
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/wb?keyword=ielts%20writing%20samples%20band%209%20pdf
- https://static.usrfiles.com/ugd/b8c837_fcd8e38937a246e79aa2b37feac3b5cd.pdf
- https://static.usrfiles.com/ugd/b8c837_2f46307689d54debacfec8c14670a98d.pdf
- https://static.usrfiles.com/ugd/ee6770_6cbf98a938d1417fb7bde3d4e07ec047.pdf
- https://static.usrfiles.com/ugd/bc0d1e_61445c31e00a4280ae9bc7c3ac813bae.pdf
- https://cdn.shopify.com/s/files/1/0431/8268/6362/files/icivics_race_to_ratify_answer_key.pdf
- https://cdn.shopify.com/s/files/1/0431/0928/6050/files/78773610803.pdf
- https://cdn.shopify.com/s/files/1/0431/1800/2340/files/altitude_app_free_for_android.pdf
- https://cdn.shopify.com/s/files/1/0433/3830/1594/files/c._o._p._the_recruit_nds.pdf
- https://cdn.shopify.com/s/files/1/0430/9437/6599/files/fafabixa.pdf
- https://cdn.shopify.com/s/files/1/0428/5480/9759/files/bosch_dishwasher_e25_error.pdf
- https://cdn.shopify.com/s/files/1/0437/5596/2522/files/tap_titans_2_artifacts_max_level.pdf
- https://cdn.shopify.com/s/files/1/0428/1594/6911/files/remasorukuwimanefiji.pdf
- https://cdn.shopify.com/s/files/1/0439/4817/9611/files/92320934986.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80789229335.pdf
- https://cdn.shopify.com/s/files/1/0430/9463/8749/files/fringe_benefit_statement.pdf
- https://cdn.shopify.com/s/files/1/0435/1619/9064/files/jiwiwexedixotewusen.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_off00010fed.bin6f1d9a9660701b71a4d74085b428e3b593133a6d29ddebb27d072e85a3d2e91f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10FED | 5688 bytes |
font_01_sfnt_off00012335.binef1b6b8f594e708f2eb8841da62b43a418d708baf740ce61662dc410fee6e838 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12335 | 10072 bytes |
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