MALICIOUS
152
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of external links, many pointing to a link farm hosted on static.usrfiles.com, and one critical link to a known malicious redirector at ttraff.cc. The document body, though heavily obfuscated, contains text related to 'even odd or neither worksheet pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The ML classifier also strongly indicated maliciousness.
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/wix?keyword=even+odd+or+neither+worksheet+pdf
- https://static.usrfiles.com/ugd/e5a943_e4701502e29c4fa1a5c4900ed9ee62fd.pdf
- https://static.usrfiles.com/ugd/361045_42bddf8923fa40ceb932e92de6de4026.pdf
- https://static.usrfiles.com/ugd/7f16bd_173d83e0313f46e4a4ac6c398e096cbe.pdf
- https://static.usrfiles.com/ugd/b8c837_95e37550f5e44b318819e444bdd307da.pdf
- https://static.usrfiles.com/ugd/b8c837_9bfe05a77a1b4d5eabd0d05d04a283b4.pdf
- https://cdn.shopify.com/s/files/1/0427/6820/3942/files/97274148264.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/savowogofoxifonikili.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91960476686.pdf
- https://cdn.shopify.com/s/files/1/0434/4102/9276/files/98258324704.pdf
- https://cdn.shopify.com/s/files/1/0436/2534/9273/files/45308470991.pdf
- https://static.usrfiles.com/ugd/accd1f_7fa85fc78d924a12bd6409787c57822e.pdf
- https://static.usrfiles.com/ugd/ab922d_5ad619e36a2a444e91b9bc7e1b359ff4.pdf
- https://static.usrfiles.com/ugd/88a84f_aaf020e676144e52bb212e088f959ff4.pdf
- https://static.usrfiles.com/ugd/66c878_f6f6dd87d7a347688c914c9cf9ac1c3e.pdf
- https://static.usrfiles.com/ugd/e73fea_0e2b0c461d954db981b4f30a263e11fe.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_off00005f58.bin213adfab1e6a0af85939fe935fedda838b90a530150cfdf18e578ce4467ae5df |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5F58 | 5060 bytes |
font_01_sfnt_off000070a7.bin796ee93bd063b8ed312a572c7e79de42cf3280c6c125498bdfb971cc21d37f9f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x70A7 | 10488 bytes |
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