MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=avast+free+antivirus+updated+version'. This URL is presented in the document body, suggesting a lure related to antivirus software updates. The presence of a large number of external PDF links, many hosted on cdn.shopify.com, indicates a link farm strategy, likely to improve SEO for malicious content. 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.ru/pify?keyword=avast+free+antivirus+updated+version
- http://tarum.pantherselitenetball.com/uploads/1/3/1/8/131871674/kabasivirulowipuvu.pdf
- https://cdn.shopify.com/s/files/1/0436/5654/4409/files/alfred_de_musset_les_caprices_de_marianne.pdf
- https://cdn.shopify.com/s/files/1/0446/9522/4473/files/thyroid_cancer_guidelines_2019.pdf
- https://cdn.shopify.com/s/files/1/0438/1189/7504/files/11877424462.pdf
- https://cdn.shopify.com/s/files/1/0429/7408/5279/files/tikize.pdf
- https://cdn.shopify.com/s/files/1/0438/3929/1554/files/ziludupunofuwoxatibow.pdf
- https://cdn.shopify.com/s/files/1/0429/8014/7359/files/absite_killer.pdf
- https://cdn.shopify.com/s/files/1/0431/2032/8865/files/64599537065.pdf
- https://cdn.shopify.com/s/files/1/0427/9474/6023/files/gozixiki.pdf
- https://cdn.shopify.com/s/files/1/0429/0219/2287/files/16611252537.pdf
- https://cdn.shopify.com/s/files/1/0431/7282/3202/files/witezawazeweba.pdf
- https://cdn.shopify.com/s/files/1/0432/9806/2501/files/91244325333.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_off0000649c.bin80c831850e548081116a21f1e010d6fa1895e710d8e1fd2901635f5226e64c5b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x649C | 5052 bytes |
font_01_sfnt_off000075db.bin8d497402d93bce8e09e053bb1ca12429a74d69165e0af34a50c31c6d4729c3f1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x75DB | 10192 bytes |
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