MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to TOEFL preparation and the malicious URL, suggesting a lure. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many of which point to similarly structured URLs on various domains, likely part of a link farm to improve search engine ranking for malicious content. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious classification.
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=essential+words+for+the+toefl+7th+edition+pdf In PDF document text
- http://toxuveg.duocreationsphotography.com/uploads/1/3/2/8/132816202/4347504.pdfIn PDF document text
- http://madafi.jeremeleonard.net/uploads/1/3/0/8/130874493/03cf981655c607.pdfIn PDF document text
- http://files.z-source.com/uploads/1/3/0/8/130873921/5970914.pdfIn PDF document text
- http://files.moirsa.org/uploads/1/3/2/6/132681910/vinafemozire-juwaraki-fosirusimob.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.opentle.orgIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7833/6165/files/50185361320.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6638/3768/files/dawutojugofedoti.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8244/1113/files/9532956690.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/1042/4993/files/10429531101.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3328/8088/files/wutakasu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/7941/6473/files/13077689986.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5949/4555/files/siwuvosekaxalegugo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50751207741.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7155/3189/files/zowuvemajapur.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9436/0743/files/98647826220.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4135/6967/files/dictionnaire_anglais_franais_larousse.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://www.gnu.org/licenses/gpl.htmlIn 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_off00004b44.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4B44 | 5260 bytes |
SHA-256: 014785918259d3f6f6c546dee9076e3f6ca09702c763f6577ed360ddb2ffa3a9 |
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font_01_sfnt_off00005d2f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5D2F | 7148 bytes |
SHA-256: 2d4a02105b625024ff9d4126acc605e1ffe76bc7d171ff7e8e58ee39eb2e5eb1 |
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font_02_sfnt_off00007090.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7090 | 9744 bytes |
SHA-256: f85fba7b009b43f83875c9dfb4b41cad9409303d29f955d64b03c2ace06f3c11 |
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font_03_sfnt_off00009224.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9224 | 16448 bytes |
SHA-256: 4972c892cf783310df7ebe7a43044f7b4e4d650808add06809858f2f0e6eeb09 |
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