MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a link farm designed to direct users to a malicious redirector at 'https://ttraff.ru/wix?keyword=yes+or+yes+piano+sheet'. The document body, though heavily obfuscated, contains references to this URL and other benign-looking PDF links, suggesting a social engineering attempt to drive traffic to malicious infrastructure. The presence of numerous external PDF links indicates a link farm strategy, likely for SEO manipulation or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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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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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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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.ru/wix?keyword=yes+or+yes+piano+sheet In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.opentle.orgIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4312/7447/files/18199132568.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5184/3733/files/57661602891.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0235/6127/files/29258333105.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1751/0818/files/71507729793.pdfIn PDF document text
- https://static.usrfiles.com/ugd/824332_bfa85a9595004e18ad0ea61adfdf4ee2.pdfIn PDF document text
- https://static.usrfiles.com/ugd/a891c0_18d7814cbb4f4da696843e64a029ec17.pdfIn PDF document text
- https://static.usrfiles.com/ugd/bae363_534bc64fad464393b6eba2afb8506a00.pdfIn PDF document text
- https://static.usrfiles.com/ugd/efc97f_20f8fbf02df641009e5df1913ce27b83.pdfIn PDF document text
- https://static.usrfiles.com/ugd/f3cb45_f89e6d6015664428a3a04b86f624e516.pdfIn PDF document text
- https://static.usrfiles.com/ugd/07e02c_7e6e455f4ee04712b37f96a25dd1127d.pdfIn PDF document text
- https://static.usrfiles.com/ugd/5d2cf3_41799974dd994adaaabab268348d6767.pdfIn PDF document text
- https://static.usrfiles.com/ugd/07e02c_06ad6590b14d451baa8d5810c3adabe1.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_9e0823010ef84d159ac91ae40d069f73.pdfIn PDF document text
- https://static.usrfiles.com/ugd/8c0e65_a77fd81c1d714905b7a40df5403f37e1.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
- http://www.gnu.org/licenses/gpl.htmlIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 5
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000549b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x549B | 16644 bytes |
SHA-256: 851fcf70dcdc2e5af290072c75d8acbe29e5d148c72dae913a372ad13c7089de |
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font_01_sfnt_off000086ea.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x86EA | 4940 bytes |
SHA-256: d44ae7da835f2c8632cdaf6239fd9c1aa24980e204f9ee06f7753b9537649c21 |
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font_02_sfnt_off000097ad.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x97AD | 9912 bytes |
SHA-256: 3b115dcdad845111e937475b011c3dc9459191c2ea70b51396e6f98eb8cae633 |
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font_03_sfnt_off0000b3e5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB3E5 | 14612 bytes |
SHA-256: 8104851ce00133ad98e9d5c5656cb1b8579de91c695dec810e6f7da493651425 |
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font_04_sfnt_off0000e120.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE120 | 16080 bytes |
SHA-256: 99dc80f4e35ecbd485aec20692fae4feb9ee2895e9102f631d55a3222af1d7fe |
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