MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text suggesting it is a worksheet answer key, which is a common lure. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO manipulation tactic to obscure the malicious redirector.
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.com/pify?keyword=informational+text+structures+worksheet+answers
- http://files.organizingwithemily.com/uploads/1/3/2/7/132741029/donuzen_mixolofamig_xenubatoluxo_sutov.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0430/3123/2661/files/81423302666.pdf
- https://cdn.shopify.com/s/files/1/0429/6278/0311/files/63419756712.pdf
- https://cdn.shopify.com/s/files/1/0435/5896/1320/files/zubemizobuw.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32150460784.pdf
- https://cdn.shopify.com/s/files/1/0433/8991/1194/files/73998852622.pdf
- https://cdn.shopify.com/s/files/1/0427/5830/8006/files/sadomuvewarapezovu.pdf
- https://cdn.shopify.com/s/files/1/0440/6149/1365/files/mac_default_browser.pdf
- https://cdn.shopify.com/s/files/1/0429/6802/3194/files/28306443231.pdf
- https://cdn.shopify.com/s/files/1/0438/9175/3115/files/arabic_language_with_english_translation.pdf
- https://cdn.shopify.com/s/files/1/0429/3279/7603/files/cost_of_goods_sold_spreadsheet_template.pdf
- https://cdn.shopify.com/s/files/1/0434/1714/1415/files/22669088479.pdf
- https://cdn.shopify.com/s/files/1/0429/5675/1002/files/rizesu.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_off00006a84.bin3ce9f91f6c320d7e4bfe292b4c52d5b29f038b0c118ecdaa837738a5d256d117 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6A84 | 5280 bytes |
font_01_sfnt_off00007c5b.binaada935a3ce2ce28d73f28a957fc7141ee3efcb2d5c0c63392b28e7a91ac1c42 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7C5B | 10264 bytes |
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