MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document contains a link disguised as 'handwriting practice worksheets for 4th graders' that redirects to a known malicious infrastructure at ttraff.ru. The document also features a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farm tactics. The ML classifier strongly indicated maliciousness, and the PDF structure itself contains a malicious redirector link.
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/pify?keyword=handwriting+practice+worksheets+for+4th+graders
- http://files.wordsbymapson.com/uploads/1/3/1/8/131856991/897497.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0427/6345/2583/files/fusosewomapapizupap.pdf
- https://cdn.shopify.com/s/files/1/0429/7257/7946/files/all_accounting_ratios_formulas.pdf
- https://cdn.shopify.com/s/files/1/0429/9508/9559/files/9047489133.pdf
- https://cdn.shopify.com/s/files/1/0432/3213/3278/files/paxetatofelaboraworapa.pdf
- https://cdn.shopify.com/s/files/1/0433/6658/0382/files/81369285341.pdf
- https://cdn.shopify.com/s/files/1/0435/6728/4379/files/rogunofetiwena.pdf
- https://cdn.shopify.com/s/files/1/0429/9328/7321/files/83438988262.pdf
- https://cdn.shopify.com/s/files/1/0431/4143/1464/files/76962383561.pdf
- https://cdn.shopify.com/s/files/1/0431/6151/8231/files/non_probability_sampling_examples.pdf
- https://cdn.shopify.com/s/files/1/0435/6331/9445/files/busemujosetus.pdf
- https://cdn.shopify.com/s/files/1/0430/8572/5857/files/form_966_instructions.pdf
- https://cdn.shopify.com/s/files/1/0430/5820/0725/files/file_converter_to_word_zamzar.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_off000054af.bin7fdbef787e5df5650cde6dccb9552ce52b08c085f3b629bd93e3d31cdc80e473 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x54AF | 5592 bytes |
font_01_sfnt_off000067c7.bin7f4727b8779ad74f2f0de46dc9b9aefeaad0a8242890cb2eb02b18f2626d235a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x67C7 | 10480 bytes |
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