MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains multiple embedded URLs, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Kumon answer book level i1', which is then followed by the malicious redirector URL. The PDF also exhibits characteristics of a link farm, with numerous external PDF links, likely for SEO manipulation to increase visibility of 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.me/pify?keyword=kumon+answer+book+level+i1
- http://files.mirroryourbrillianceonvideo.com/uploads/1/3/1/4/131407692/f94965c.pdf
- http://files.waquoithealingartscenter.com/uploads/1/3/0/7/130776499/nagozogojikubukato.pdf
- http://files.katewestart.com/uploads/1/3/0/7/130775402/9248079.pdf
- https://cdn.shopify.com/s/files/1/0430/1560/2337/files/zekolevetanuvokokajizafa.pdf
- https://static.usrfiles.com/ugd/6f58fb_1e6e1e65ca8342098acac8c3c5110af7.pdf
- https://static.usrfiles.com/ugd/ed8107_37167dcd29794bd39fee5847f55f4998.pdf
- https://static.usrfiles.com/ugd/b8bbd7_48bf07c5d3a24ab1b71d5f99df50f4da.pdf
- https://static.usrfiles.com/ugd/a2ebd8_d5902068b075436a8225bc13b50139e3.pdf
- https://static.usrfiles.com/ugd/b5973a_0ce45f66367d45c2a4a53c4d58921880.pdf
- https://static.usrfiles.com/ugd/38955b_6a818ac68a8e4b01b3136ea50d57881e.pdf
- https://static.usrfiles.com/ugd/28146e_ce5d621f3330435296f500e4172ff8e1.pdf
- https://static.usrfiles.com/ugd/a07927_ef68902361fe4cc89fc1907629164ccd.pdf
- https://static.usrfiles.com/ugd/aff7ca_b348c66941a24b69a66b359e7dbeada9.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005041.binad62f1d60ba2d5f7525eb27a507c8c59694ce9800180e7b1850d1aceff475ae5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5041 | 5012 bytes |
font_01_sfnt_off0000613c.bin1dda8ada5529da1043500c65fbd756f147d7feb17658458d91428660f4187650 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x613C | 10056 bytes |
font_02_sfnt_off0000839d.bin4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x839D | 4324 bytes |
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