MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though partially garbled, suggests a lure related to an 'answer key'. The primary malicious URL identified is https://ttraff.cc/pify?keyword=cds+2+2020+answer+key+pdf, which is likely used to redirect users to a malicious site. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm for SEO poisoning or to distribute further malicious 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.cc/pify?keyword=cds+2+2020+answer+key+pdf
- http://files.swhstigerband.com/uploads/1/3/1/3/131380297/zagiwajilewa.pdf
- http://files.wokingminiaturerailwaysociety.com/uploads/1/3/1/3/131382673/tigojofa.pdf
- http://files.yummysnacks1.com/uploads/1/3/2/6/132681579/wovudifileba-pamivi-niguzanoxemode-lipomodapaxebu.pdf
- http://jaxovagi.eugeneysantos.com/uploads/1/3/1/3/131380213/23171ed.pdf
- https://cdn.shopify.com/s/files/1/0429/6045/3791/files/nuxuvixadedotod.pdf
- https://cdn.shopify.com/s/files/1/0439/9860/9566/files/seventh_day_adventist_meal_plan.pdf
- https://cdn.shopify.com/s/files/1/0433/2060/6885/files/accu_chek_error_codes.pdf
- https://cdn.shopify.com/s/files/1/0428/1594/6911/files/holy_bible_esv.pdf
- https://cdn.shopify.com/s/files/1/0429/7257/7946/files/talipexorupopitutijidu.pdf
- https://cdn.shopify.com/s/files/1/0434/8667/5109/files/basexo.pdf
- https://cdn.shopify.com/s/files/1/0433/3476/2654/files/36398008831.pdf
- https://cdn.shopify.com/s/files/1/0446/6468/4697/files/aloysia_citriodora.pdf
- https://cdn.shopify.com/s/files/1/0440/2089/1798/files/zitafovinutalafux.pdf
- https://cdn.shopify.com/s/files/1/0436/4340/4441/files/25263243198.pdf
- https://cdn.shopify.com/s/files/1/0432/4907/4336/files/54683563597.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_off0000a530.bin1908ad46d19aaa66964ec3936fa061cc587211e3257a96cba62dc0b3e57e41da |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA530 | 5440 bytes |
font_01_sfnt_off0000b7d8.bin6e65722bdd37ed06d960c6bd7273196b0cfd459615d89b509a3379326334da21 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB7D8 | 12520 bytes |
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