MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
T1566.002 Spearphishing Attachment
The PDF contains embedded links, with one pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a reference to the same malicious URL. The ML classifier also strongly indicated maliciousness. The primary attack vector appears to be a lure using a tax form to redirect users to 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.cc/pify?keyword=2017+form+1040+itemized+deduction+worksheet
- http://guxim.cryptofleamarket.co/uploads/1/3/1/4/131483416/lubemepixisuve.pdf
- https://cdn.shopify.com/s/files/1/0441/4137/9736/files/letter_h_tracing_worksheets.pdf
- https://cdn.shopify.com/s/files/1/0431/8612/7009/files/47032072567.pdf
- https://cdn.shopify.com/s/files/1/0429/1995/2540/files/wedavirerutorobeduwadoxof.pdf
- https://cdn.shopify.com/s/files/1/0437/2358/7733/files/830341136.pdf
- https://cdn.shopify.com/s/files/1/0435/5093/3155/files/gexiv.pdf
- https://cdn.shopify.com/s/files/1/0434/5144/9496/files/4539693675.pdf
- https://cdn.shopify.com/s/files/1/0432/7309/3288/files/lixanitolis.pdf
- https://cdn.shopify.com/s/files/1/0433/1339/7913/files/53347741166.pdf
- https://cdn.shopify.com/s/files/1/0430/9906/2421/files/array_of_colours.pdf
- https://cdn.shopify.com/s/files/1/0430/6350/9143/files/vert_shock_week_3.pdf
- https://cdn.shopify.com/s/files/1/0436/5778/9593/files/dawn_of_war_dark_crusade_mods.pdf
- https://cdn.shopify.com/s/files/1/0431/2324/5216/files/photo_collage_templates_for_photographers.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_off00008e32.bin713f8f2cbf4a5f13ec4cc2113100088782e136c5d241f7664fc9554cb6aa70d9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8E32 | 5624 bytes |
font_01_sfnt_off0000a14d.bin71dbf5e17156fbc57c73b8b637fa8280d94b16eab0b5a3570a5718feb403ed8b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA14D | 10916 bytes |
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