MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to a 'mechanical advantage worksheet' and the malicious URL itself. The PDF_SEO_LINK_FARM heuristic indicates a large number of embedded links, likely for SEO manipulation or to obscure the malicious destination. The ML classifier 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=mechanical+advantage+worksheet+physical+science+if8767
- http://files.bradfordvdub.org/uploads/1/3/1/6/131606550/7388838.pdf
- https://cdn.shopify.com/s/files/1/0428/2603/9463/files/pitebidafemigapefug.pdf
- https://cdn.shopify.com/s/files/1/0433/4272/5275/files/fibedewiruv.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/texojorigerusoxuduk.pdf
- https://cdn.shopify.com/s/files/1/0428/7237/3414/files/dazululegodexutewisupaz.pdf
- https://cdn.shopify.com/s/files/1/0429/2490/0515/files/78515558388.pdf
- https://cdn.shopify.com/s/files/1/0433/9000/9502/files/fowefezilavewezawetub.pdf
- https://cdn.shopify.com/s/files/1/0428/3482/1287/files/fuwezexulem.pdf
- https://cdn.shopify.com/s/files/1/0429/5196/6873/files/39455978484.pdf
- https://cdn.shopify.com/s/files/1/0437/1064/4377/files/dubobobarebipose.pdf
- https://cdn.shopify.com/s/files/1/0438/2933/0077/files/bootstrap_vertical_align.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00004ecb.binb62ab50de355f11941e32d732446fc0e2be70fbed2fe21a67b3815bc3fa6c110 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4ECB | 5956 bytes |
font_01_sfnt_off0000632b.bin72f2ad00c1a51c446873ab488aa548b01f0924fd982a1012583e454a6bddc1b2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x632B | 9752 bytes |
font_02_sfnt_off0000848d.bina542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x848D | 4324 bytes |
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