MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.001 User Execution: Malicious Link
T1059.001 PowerShell
The PDF file contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One such link points to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'easy piano sheet music'. The presence of a link farm indicates an attempt to obscure the true malicious destination, likely a phishing or malware distribution site.
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.com/wb?keyword=easy%20piano%20sheet%20music%20classical%20pdf In PDF document text
- http://files.ministerdebweddings.com/uploads/1/3/1/3/131379060/nurubotezu-zugebasupisobe-fobivizujan.pdfIn PDF document text
- http://files.allisonwiserpianist.com/uploads/1/3/1/3/131382700/5322645.pdfIn PDF document text
- http://files.cosmicaes.com/uploads/1/3/0/7/130776755/8fad464f7.pdfIn PDF document text
- http://files.humanityreboxed.com/uploads/1/3/0/9/130969592/70efc217.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/1/0433/0687/7080/files/tesip.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0533/6985/files/dazifikuxixokidewedugaguv.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/0326/3645/files/30976898727.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6761/3082/files/potegexapitaliz.pdfIn PDF document text
- https://pigarudumo.files.wordpress.com/2020/06/bevoxafogamebenir.pdfIn PDF document text
- https://sasixoxifira.files.wordpress.com/2020/07/nukulasekedenagigam.pdfIn PDF document text
- https://sujaxogudat.files.wordpress.com/2020/07/7105188516.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3127/3365/files/watupuvawazijujibuk.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/womosoravitixugefiwil.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7754/2823/files/44477630630.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8855/9780/files/45820398387.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9476/1877/files/33896719609.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7927/9527/files/zapadevotepojaf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45598155969.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3070/8375/files/67880317735.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7015/2088/files/3095944893.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_off000073a2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x73A2 | 5240 bytes |
SHA-256: 968cacecae7cd0475ff8f604f3d6ee6e1bfe938187c5649e8db13e1b42fe33c7 |
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font_01_sfnt_off00008554.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8554 | 10260 bytes |
SHA-256: 37b9c9b11de07522cbab00fd238c241f1b9e787b2db9e75a617a90bd0871854c |
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