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.cc, which is designed to lure users into clicking on further malicious links. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to search results for 'piano sheet music'. The presence of numerous links to static.usrfiles.com, many of which are flagged as benign, suggests a link farm or SEO poisoning tactic to disguise the malicious redirector.
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=batman+begins+corynorhinus+piano+sheet+music
- https://static.usrfiles.com/ugd/b8c837_7f1c85de66dd4687b694c5f26e3a0ccd.pdf
- https://static.usrfiles.com/ugd/b8c837_5be3f9a172cd4177b11731fd3b77c14b.pdf
- https://static.usrfiles.com/ugd/b8c837_3bd8c060f0054c4aaf48efed9692b423.pdf
- https://static.usrfiles.com/ugd/4d400c_05c7a9b2478846a585e762aafd6f7caf.pdf
- https://static.usrfiles.com/ugd/f84671_a93fbe351efe4b7995a1c8d879dfc09f.pdf
- https://cdn.shopify.com/s/files/1/0432/0398/5570/files/rivisikifajotesixate.pdf
- https://static.usrfiles.com/ugd/b8c837_b9d89722f75f483983a8e7d72e5640f8.pdf
- https://static.usrfiles.com/ugd/49be48_bb53023fd9ac4090afdf0d01904d63a9.pdf
- https://static.usrfiles.com/ugd/dba42a_a8f3542bf28e45e0852839123da53008.pdf
- https://static.usrfiles.com/ugd/72216b_9227325609d541e5b8de4b87c4fa0dd0.pdf
- https://static.usrfiles.com/ugd/83b1b3_201edc6f974245b6a4523e484da7d3b6.pdf
- https://static.usrfiles.com/ugd/b8c837_14d029180e6840eb9c119c8550b51e49.pdf
- https://static.usrfiles.com/ugd/eaf48f_c274fadc37814bdc938b8690740523e3.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_off000045ec.bin89e32f1bc8e40844a2c10d722ec07c06d75fdc07a51bfe6fb1049d4162683a79 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x45EC | 5488 bytes |
font_01_sfnt_off00005869.binb0b00c2efe91c2c6f8e0b7c206dab76cfb0d540628f41c6ddf4d1b62f3f44d5d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5869 | 10444 bytes |
font_02_sfnt_off00007b6d.bin0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7B6D | 4324 bytes |
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