MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is related to sheet music, which is likely a lure. The primary malicious URL is https://ttraff.cc/pify?keyword=all+about+that+bass+violin+sheet+music, which is designed to redirect users to further malicious content. The presence of numerous PDF links, many hosted on Shopify, suggests a link farm strategy to improve SEO for malicious content.
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=all+about+that+bass+violin+sheet+music In PDF document text
- http://files.mstreetfreerunning.com/uploads/1/3/2/6/132682681/zuporidimudi-bedajizujamin-fusunivikexi.pdfIn PDF document text
- http://files.skydivetofino.ca/uploads/1/3/1/1/131163867/veziretej.pdfIn PDF document text
- http://files.alexkalt.com/uploads/1/3/0/9/130969967/1336128.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/1/0439/2170/3067/files/16656598034.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4016/9366/files/fundamentals_of_spread_spectrum_modulation.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2797/9678/files/fidilebizebosukizava.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1792/0934/files/kavafafakifotudipofamodax.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9587/5989/files/maruvitumiselaj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7780/3931/files/17540027133.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7762/3201/files/ranco_electronic_temperature_control_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/0711/3373/files/calculus_early_transcendental_functions_4th_edition_free_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1567/5809/files/gavedoxonoxuzetivur.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/5207/1074/files/kisenunoja.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/2247/3624/files/sogenas.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7503/4520/files/29633238554.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/9825/7048/files/78724725113.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/0352/5794/files/husky_3_gal_air_compressor.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/2330/9727/files/19956237426.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
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00004a17.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4A17 | 5132 bytes |
SHA-256: 5f1f5389e912504f402fb1c6436efb7830693268de159444453ec26c89552a6b |
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font_01_sfnt_off00005b62.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5B62 | 9668 bytes |
SHA-256: 482b0e428d5b0697b958a81e8ee867dc29522b64e49db93d056806df4e16e13a |
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