MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, contains text related to 'Calibre windows 64' and includes the malicious URL, suggesting a lure to download potentially unwanted or malicious software. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy, likely to improve search engine ranking for 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.com/pify?keyword=calibre++windows+64
- http://files.alexloer.com/uploads/1/3/0/8/130815026/5508471.pdf
- https://cdn.shopify.com/s/files/1/0427/9592/5671/files/65509605401.pdf
- https://cdn.shopify.com/s/files/1/0431/9218/9089/files/achtung_cthulhu_fr.pdf
- https://cdn.shopify.com/s/files/1/0436/5172/7513/files/96086220316.pdf
- https://cdn.shopify.com/s/files/1/0430/9336/0801/files/plsticos_biodegradveis.pdf
- https://cdn.shopify.com/s/files/1/0430/4535/5682/files/java_interview_cheat_sheet.pdf
- https://cdn.shopify.com/s/files/1/0431/7108/6492/files/17980580311.pdf
- https://cdn.shopify.com/s/files/1/0433/8450/4474/files/42613195033.pdf
- https://cdn.shopify.com/s/files/1/0427/9592/5671/files/15568892545.pdf
- https://cdn.shopify.com/s/files/1/0431/4995/1140/files/xalirexabezuxoduwujafeti.pdf
- https://cdn.shopify.com/s/files/1/0439/0413/9416/files/suboru.pdf
- https://cdn.shopify.com/s/files/1/0427/9956/2911/files/6702967448.pdf
- https://cdn.shopify.com/s/files/1/0435/6790/6979/files/58806095057.pdf
- https://cdn.shopify.com/s/files/1/0434/0832/6812/files/85774702805.pdf
- https://cdn.shopify.com/s/files/1/0428/5667/7543/files/tratamiento_nutricional_en_anemia_ferropenica.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_off00006809.bin9a68e6ba6a52ec2467ccfcabe9462202e7dbaf681d15ee3a7d5a922c8874abba |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6809 | 5200 bytes |
font_01_sfnt_off000079d5.bindf4858aa5ea7fb0ac570affc067413e301c64c6a0f01eda8ddbd0bce1e630c54 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x79D5 | 14952 bytes |
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