MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially obfuscated, includes text related to 'spanish worksheets' and the tool 'wkhtmltopdf', suggesting a lure to disguise malicious redirection. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it's designed to lead users to harmful 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.com/pify?keyword=preterite+tense+in+spanish+worksheets
- http://files.sectournaments.com/uploads/1/3/1/4/131452942/duzidakiwir-lewov-namel-ganamuda.pdf
- http://kijopobo.kellymichellebaker.com/uploads/1/3/0/8/130874679/5673650.pdf
- http://files.weatherfordobgyn.com/uploads/1/3/0/7/130739398/90048.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0432/1057/1940/files/bjp_candidate_list_2020_maharashtra_election_download.pdf
- https://cdn.shopify.com/s/files/1/0433/8922/3066/files/35730894768.pdf
- https://cdn.shopify.com/s/files/1/0431/5670/1346/files/dunojawan.pdf
- https://cdn.shopify.com/s/files/1/0438/8379/0491/files/student_exploration_calorimetry_lab_answers_activity_a.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90262961418.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13578549785.pdf
- https://cdn.shopify.com/s/files/1/0428/7099/7151/files/90675853847.pdf
- https://cdn.shopify.com/s/files/1/0438/9902/7611/files/kegujexiguwazob.pdf
- https://cdn.shopify.com/s/files/1/0437/1428/1625/files/license_plate_template_texas.pdf
- https://cdn.shopify.com/s/files/1/0438/9021/3019/files/amrita_nayak_new_odia_song_2019.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_off00004af9.bin5afcfe1906007745c2ebcdc2ddf168f9f625320db5babf6c708e9b235d08aa31 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4AF9 | 5032 bytes |
font_01_sfnt_off00005c15.binbb87f6459db6771789d8bd0c3e46f233a3fec65b3ef3f6d47df7dd026d9b9274 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5C15 | 10300 bytes |
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