MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which likely serves to obscure the ultimate destination of the attack. Another critical heuristic noted a large number of external PDF links, suggesting a link farm or SEO poisoning attempt. The document body contains garbled text but includes the same redirector URL and several Shopify-hosted PDF links.
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=happy+birthday+to+you+flute+sheet+music
- http://files.thosefunnylittlepeople.com/uploads/1/3/1/4/131453156/6ecc0.pdf
- http://files.housenbuildings.com/uploads/1/3/1/1/131164199/gexorodudo-gerufatew.pdf
- http://files.levelupwithaleana.com/uploads/1/3/0/8/130813427/7196367.pdf
- https://cdn.shopify.com/s/files/1/0440/2606/9157/files/24317495143.pdf
- https://cdn.shopify.com/s/files/1/0431/7636/2150/files/cdc_flu_shot_2018_information_sheet.pdf
- https://cdn.shopify.com/s/files/1/0440/0254/1726/files/22448200797.pdf
- https://cdn.shopify.com/s/files/1/0436/5654/4409/files/anemia_defisiensi_besi_idai.pdf
- https://cdn.shopify.com/s/files/1/0436/8039/9513/files/79598855044.pdf
- https://cdn.shopify.com/s/files/1/0433/2906/1032/files/55428448972.pdf
- https://cdn.shopify.com/s/files/1/0429/1274/3591/files/juwenu.pdf
- https://cdn.shopify.com/s/files/1/0434/2199/1079/files/49705211079.pdf
- https://cdn.shopify.com/s/files/1/0435/6059/9701/files/sozis.pdf
- https://cdn.shopify.com/s/files/1/0434/1704/3111/files/jefizikive.pdf
- https://cdn.shopify.com/s/files/1/0428/3075/8054/files/88180118107.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_off00006555.bin9801d4865033463b72c6b5f0cd11abd37de8490b0b6f876bddb2adf12d009d90 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6555 | 5600 bytes |
font_01_sfnt_off00007836.bin33c506cb04e658baedcdc002dd6797aa7fe70600b0e4739f4a5ea4af1490a754 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7836 | 10272 bytes |
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