MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is an answer key for a cloze exercise, which is likely a lure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=cloze+exercise+4+adverbs+of+time+answers, which is used to redirect the user to further malicious content. The presence of a link farm heuristic further supports the malicious intent of distributing links.
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=cloze+exercise+4+adverbs+of+time+answers
- http://wulugeg.mymotherssecrets.com/uploads/1/3/1/4/131437604/sijigixanetofigufit.pdf
- https://cdn.shopify.com/s/files/1/0430/2353/2195/files/noxutapu.pdf
- https://cdn.shopify.com/s/files/1/0430/3595/1257/files/96773797051.pdf
- https://cdn.shopify.com/s/files/1/0437/9800/3874/files/popujizozimubefipido.pdf
- https://cdn.shopify.com/s/files/1/0437/7106/8577/files/farming_books_free_download.pdf
- https://cdn.shopify.com/s/files/1/0430/8772/4704/files/58708711358.pdf
- https://cdn.shopify.com/s/files/1/0430/9018/2304/files/gate_valve_images.pdf
- https://cdn.shopify.com/s/files/1/0432/9802/9733/files/jemonaruvedisukezawusa.pdf
- https://cdn.shopify.com/s/files/1/0433/6405/7247/files/nutidonukolikivanale.pdf
- https://cdn.shopify.com/s/files/1/0452/9052/0738/files/nevasoligezogilesozo.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21511039237.pdf
- https://cdn.shopify.com/s/files/1/0437/1211/8952/files/25878467963.pdf
- https://cdn.shopify.com/s/files/1/0448/9605/9547/files/proteger_adobe_acrobat_reader_dc.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_off00006c51.bin8d14fbc453b02fe1756782acbe7f4fe1712c462d90fb7b555eead2517a31b414 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6C51 | 5568 bytes |
font_01_sfnt_off00007f4c.bin91471ac8f3e8f737c324ed8b2039c296dfe0a332dcd75016c2a052864fb9158f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7F4C | 10088 bytes |
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