MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links, including a primary redirector URL, disguised as a "complete guitar lesson PDF". The heuristic firings indicate it is a malicious redirector and part of a link farm, likely designed to phish users or lead them to malicious content. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.
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.cc/pify?keyword=aula+de+violao+completa+pdf In PDF document text
- http://files.learnguitar4fun.com/uploads/1/3/1/8/131856381/8522082.pdfIn PDF document text
- http://files.coastaldanceclub.co.uk/uploads/1/3/0/7/130776374/kotululemuxa_lasaduredi.pdfIn PDF document text
- http://files.redroselandscaping.com/uploads/1/3/1/3/131380008/6890b4e73c6465c.pdfIn PDF document text
- http://files.easyway-it.com/uploads/1/3/2/7/132710732/jufobefovo_faguripuretax_nakizumam.pdfIn PDF document text
- http://files.graphicsetc-ms.com/uploads/1/3/2/7/132740798/lidosuwazuvego.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7223/3380/files/ravpower_rp-_wd01_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8660/0609/files/21497585934.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4375/0049/files/43244766522.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/2344/8736/files/88377781326.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9173/9295/files/katopopasojuwuwizudin.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8011835234.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65233410578.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nagexonulelaxefirulilona.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9495/7475/files/99_mining_guide_osrs.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lobusine.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85450973079.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6019/1637/files/topology_optimization_theory_methods_and_applications.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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000071f7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x71F7 | 5076 bytes |
SHA-256: 6ddb08a8d2393f71a416f4c35961777254351a8ea5af27873c7c9b1f44520039 |
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font_01_sfnt_off0000833d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x833D | 11544 bytes |
SHA-256: eaec0c72fb8cf5051f96b6b3353743e1327e746b32656ffc1aff6b9ccfdbd33e |
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font_02_sfnt_off0000a930.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA930 | 16304 bytes |
SHA-256: 8fe31ac2096c5e11ca20e474ac9d4b0e624cd7c6a3d6648e58269b78a2b36287 |
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