MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a link to a known malicious redirector, ttraff.com, which is used to obscure the final destination. The document body and embedded links suggest a lure for downloading textbooks, likely a pretext for delivering malware. The ML classifier strongly indicated maliciousness, and the presence of a link farm further supports a malicious intent.
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=vce+textbooks+pdf+download
- http://files.scrappingfairy.net/uploads/1/3/0/7/130738914/kanotuxadinivuvas.pdf
- http://files.parkerpiecekeepers.com/uploads/1/3/1/3/131379253/3141796.pdf
- http://files.jumbotreatzbooth.com/uploads/1/3/0/7/130775677/1335351.pdf
- http://files.glamourembalmer.com/uploads/1/3/2/6/132681560/8188632.pdf
- https://cdn.shopify.com/s/files/1/0434/6894/7616/files/jekemogigetedudurejirake.pdf
- https://cdn.shopify.com/s/files/1/0431/5657/0266/files/folavikitaf.pdf
- https://cdn.shopify.com/s/files/1/0430/3477/1610/files/pedotabogibunapuzupugen.pdf
- https://cdn.shopify.com/s/files/1/0435/3097/7431/files/sojaperodetixul.pdf
- https://cdn.shopify.com/s/files/1/0429/9181/2767/files/51259288443.pdf
- https://cdn.shopify.com/s/files/1/0431/1570/8580/files/miboreruranuzubaduma.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83971047952.pdf
- https://cdn.shopify.com/s/files/1/0433/1533/1227/files/basel_ii_2020.pdf
- https://cdn.shopify.com/s/files/1/0439/1275/7400/files/38208029096.pdf
- https://cdn.shopify.com/s/files/1/0437/5802/6904/files/62031516431.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_off000047db.binf8e75cd2f006017ab4144b568d13ad56e515036c203c59689fdd325ab33a063e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x47DB | 5380 bytes |
font_01_sfnt_off00005a5b.bind8c7128bcad347577b2f5562cfe9d201b5142a449706a7a51d27a7da0a44e7f3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5A5B | 9896 bytes |
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