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 (ttraff.ru). The document body, though heavily obfuscated, contains text suggesting it is a 'Speech punctuation worksheet year 3', which is likely a lure. The presence of multiple PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute malicious content. The ML classifier also strongly indicated maliciousness.
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=speech+punctuation+worksheet+year+3
- http://fitugoki.allie-coosh.com/uploads/1/3/2/6/132680813/pufanol.pdf
- http://files.top-value.com/uploads/1/3/1/1/131163737/e4ee340ed21.pdf
- http://ginonako.tabiatbeladiest.com/uploads/1/3/1/6/131606349/jetozemu_pidobovopatu.pdf
- https://cdn.shopify.com/s/files/1/0429/1022/0447/files/59339169422.pdf
- https://cdn.shopify.com/s/files/1/0432/7338/8190/files/jutunawovuwimopo.pdf
- https://cdn.shopify.com/s/files/1/0440/5598/6341/files/reraxojiguji.pdf
- https://cdn.shopify.com/s/files/1/0433/6409/0006/files/23479001387.pdf
- https://cdn.shopify.com/s/files/1/0430/4430/7098/files/voxuterutevulifajimudexe.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75904593322.pdf
- https://cdn.shopify.com/s/files/1/0437/5108/0087/files/affective_domain_objectives.pdf
- https://cdn.shopify.com/s/files/1/0434/7641/8722/files/17655920541.pdf
- https://cdn.shopify.com/s/files/1/0433/0297/7700/files/jirifozixelenategis.pdf
- https://cdn.shopify.com/s/files/1/0429/5622/6716/files/uninstall_citrix_receiver_mac.pdf
- https://cdn.shopify.com/s/files/1/0440/8524/8165/files/fejil.pdf
- https://cdn.shopify.com/s/files/1/0433/4039/8750/files/zufironanexover.pdf
- https://cdn.shopify.com/s/files/1/0430/1615/9395/files/59478851435.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_off000051f4.bin8fce85ddee65bd47527992546bcee490713d5d5e777978aa3f17554efd2e477b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x51F4 | 5516 bytes |
font_01_sfnt_off000064c2.bin0ca3108ad009372f4a0ed778047c38a558c603fb76c04e60e73fed19c3206e41 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x64C2 | 9984 bytes |
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