MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to 'red black tree in data structure pdf', likely to trick users into believing it's a legitimate technical document. The presence of many SEO-optimized links further indicates an attempt to broaden the reach of this phishing or redirection scheme.
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=red%20black%20tree%20in%20data%20structure%20pdf In PDF document text
- http://files.fathersparentalrights.com/uploads/1/3/1/1/131164204/4902711.pdfIn PDF document text
- http://files.gaddyshackranch.com/uploads/1/3/2/7/132710759/vuretexop_vevixisenekox.pdfIn PDF document text
- http://files.barometerofalumnisentiment.com/uploads/1/3/0/9/130969562/vamopu.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/1/0430/4103/0293/files/95750096997.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5317/0334/files/54435152861.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0192/1184/files/30113898315.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2754/5757/files/19022067939.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1994/3579/files/35387018578.pdfIn PDF document text
- https://kipebalaram682835488.files.wordpress.com/2020/06/turovumizukezividoji.pdfIn PDF document text
- https://jarajabeduxe.files.wordpress.com/2020/07/votavotezosexedej.pdfIn PDF document text
- https://wunugevakel.files.wordpress.com/2020/06/83585169573.pdfIn PDF document text
- https://zuzalafaj.files.wordpress.com/2020/07/6014497707.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3681/9104/files/62879465212.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1411/1903/files/jafotubigetadita.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/4295/5676/files/56557294857.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1293/2255/files/49331653038.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8868/3932/files/60817302321.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5436/6877/files/34122738136.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8178/4726/files/xuderofagut.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_off0000acf4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xACF4 | 5132 bytes |
SHA-256: 735fd9e92ce0d9c2de9bb0c5fb3528b6ebaede4593af1633ed36da3978d718fa |
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font_01_sfnt_off0000be79.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBE79 | 15996 bytes |
SHA-256: fe0a43afd1dc610f25b32a3279c67658602acb5a41f551ddc64dab52ea5916da |
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