MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a malicious redirector link disguised as a guitar chords chart, which is part of a larger link farm strategy. The ML classifier strongly indicates maliciousness, and the presence of numerous SEO-optimized PDF links hosted on Shopify suggests a coordinated effort to distribute malicious content. No scripts were extracted, but the primary attack vector is the embedded malicious URL.
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=guitar+chords+chart+for+beginners+pdf In PDF document text
- http://files.synergysoundltd.com/uploads/1/3/2/6/132681602/29a8c9b.pdfIn PDF document text
- http://files.stabletables.net/uploads/1/3/1/4/131483138/ravanidupuweka.pdfIn PDF document text
- http://files.bigbucksobx.com/uploads/1/3/2/6/132681783/rimanuzijekevadibuk.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/1/0431/0515/7282/files/garilerenalafojeso.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8637/2246/files/nigavabixatabin.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/5543/0302/files/ritama.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/5393/0901/files/raluzakelepoje.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5095/1066/files/10326180903.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1510/9797/files/kixuxamonewizi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0896/6306/files/54406002703.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9737/5399/files/94172757212.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0425/4615/files/nobam.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9465/4632/files/zusumozezexawosagemiwe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4751/7341/files/78288729574.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/9244/2264/files/52154754040.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2469/4942/files/66016756862.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/6249/1286/files/navosijejalaredafal.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_off000094ec.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x94EC | 5556 bytes |
SHA-256: 1c407b4356f119a91e26c0bf772975af2ca999fd8b0aa1c6e9de99db10e2a44d |
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font_01_sfnt_off0000a7cb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA7CB | 10216 bytes |
SHA-256: c0c9df051daef6d743bbe6d028eea858ad443057bbfe28ca22b99640520b9094 |
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font_02_sfnt_off0000cb08.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCB08 | 16076 bytes |
SHA-256: 3843e86183f501df8859981d7610fa40343104ecc6001567920a71972151aa82 |
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