MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=heartbeat+bts+flute+sheet+music', which is flagged as malicious. This suggests the PDF is designed to redirect users to malicious content through a deceptive link farm.
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/pify?keyword=heartbeat+bts+flute+sheet+music In PDF document text
- http://kogesi.musicinthenineties.com/uploads/1/3/1/6/131636644/3504210.pdfIn PDF document text
- http://basar.dectfl.org/uploads/1/3/1/4/131437987/9267262.pdfIn PDF document text
- http://gerotiko.bhstomp.com/uploads/1/3/1/4/131407089/49eb003085c10.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/1/0437/1814/8261/files/lupabuguzaxagekovetosevot.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/8268/4318/files/gomujil.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1223/5174/files/sogozakefoxe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6345/1549/files/delolari.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/6605/5063/files/24391788252.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4488/7966/files/cambridge_primary_curriculum.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5606/2876/files/59754266173.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1618/3205/files/tisepelidejabudixepadato.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2281/0268/files/zidetizunutubasiwexoveteb.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2079/5556/files/24593384966.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0602/5128/files/bodepowipinitelasu.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00004603.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4603 | 3748 bytes |
SHA-256: 45e0f8828c64272d499c18f9e2112311b015622047a2d401efb6c4b36f1d194a |
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font_01_sfnt_off00005362.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5362 | 5220 bytes |
SHA-256: 53fad2ee2fc3192974ae15c85108ab235e52bd369702336357efda584e013df6 |
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font_02_sfnt_off000064f6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x64F6 | 13708 bytes |
SHA-256: 47766049bf17831d356415f869105f2357973684a48d1035b5ebaa8eb2808f56 |
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font_03_sfnt_off00009073.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9073 | 16080 bytes |
SHA-256: 705cd36d9c2227ee052114be9604a9bf84eb8c2476a52f9da8c5a7759dbb33cb |
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