MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or redirection strategy. One prominent URL, 'https://ttraff.cc/pify?keyword=mole+conversion+worksheet+chemistry+1b+answers', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains similar URLs and text related to a 'mole conversion worksheet', indicating a lure to trick users into clicking malicious links. The ML classifier also strongly flagged this PDF as malicious.
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=mole+conversion+worksheet+chemistry+1b+answers
- http://files.rvabookloversfestival.com/uploads/1/3/0/8/130814397/xivoli.pdf
- http://files.bluevista725.com/uploads/1/3/1/3/131381095/5070035.pdf
- http://files.merakihh.com.au/uploads/1/3/2/7/132740193/3746914.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0440/6080/3237/files/exploracion_del_nervio_vago.pdf
- https://cdn.shopify.com/s/files/1/0434/5511/9512/files/71684927282.pdf
- https://cdn.shopify.com/s/files/1/0435/2756/9576/files/56100244924.pdf
- https://cdn.shopify.com/s/files/1/0432/0329/7438/files/kufab.pdf
- https://cdn.shopify.com/s/files/1/0428/3957/2643/files/40687510731.pdf
- https://cdn.shopify.com/s/files/1/0437/7218/2685/files/lotus_1-_2-_3_spreadsheet_file.pdf
- https://cdn.shopify.com/s/files/1/0430/0298/6659/files/jowedumukipinabipi.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_off00004617.binb3cf8f9cd1a74f5953ad04be0b37549eb21e2664cb2e3033fcdd650f66d9b3e4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4617 | 5552 bytes |
font_01_sfnt_off000058ec.binb23bf4ec2fd5b4a95bf10db8f6cc4bd1a026855eb822d40317bec2c379f7a102 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x58EC | 10128 bytes |
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