MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially obfuscated, suggests a lure related to IRS charitable contributions, aiming to trick users into visiting the malicious URL. The presence of embedded links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.
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=irs+charitable+contributions+form+2017
- http://ruweworev.worldswarmestsocks.com/uploads/1/3/2/6/132681579/ditasiwiwodirepona.pdf
- http://jafinit.buttonwoodheights.com/uploads/1/3/0/7/130776659/zaropatel_liwakil_mivavez_sopevimit.pdf
- http://files.oldplunderuk.com/uploads/1/3/1/3/131383330/9751552.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0430/5652/9565/files/94531006044.pdf
- https://cdn.shopify.com/s/files/1/0431/5951/9387/files/1-_99_fishing_guide.pdf
- https://cdn.shopify.com/s/files/1/0432/6899/7283/files/52068527952.pdf
- https://cdn.shopify.com/s/files/1/0430/0403/5221/files/mijupu.pdf
- https://cdn.shopify.com/s/files/1/0433/9941/3921/files/zesawejazarasabubu.pdf
- https://cdn.shopify.com/s/files/1/0429/8607/8369/files/forms_of_breach_of_contract.pdf
- https://cdn.shopify.com/s/files/1/0429/7683/7785/files/neoliberalismo_concepto_y_caracteristicas.pdf
- https://cdn.shopify.com/s/files/1/0428/1496/3868/files/wapakiberel.pdf
- https://cdn.shopify.com/s/files/1/0437/9069/6597/files/nijunaxotedivemuzidaneto.pdf
- https://cdn.shopify.com/s/files/1/0428/2590/8383/files/sakodekulopetukesaxir.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/84511803825.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_off0000775b.binab614ed683b64b8f60da4e2cc13bc5b9af4efc5cf210e5d253fc210198cc2641 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x775B | 5604 bytes |
font_01_sfnt_off00008a3e.bin8df27060d15cf21dfe98b837ceebbc5f460bf752c944e4be3f45788e1d3c5917 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8A3E | 10244 bytes |
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