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, with one specifically pointing to a known malicious redirector. The document body, though obfuscated, contains text related to 'reading comprehension' and the URL itself, suggesting a lure to trick users into clicking malicious links. The ML classifier strongly indicated maliciousness, and the PDF structure shows a link farm designed to distribute traffic to various external sites.
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=true%20false%20reading%20comprehension%20pdf In PDF document text
- http://files.ocms-mi.org/uploads/1/3/1/0/131071191/mebawalubokodimibu.pdfIn PDF document text
- http://lamuruz.directofficefurnitureoutlet.com/uploads/1/3/0/8/130813765/rovivamogepemutopaz.pdfIn PDF document text
- http://files.foodjourneywithraul.com/uploads/1/3/0/7/130775672/worawuj-pamaworere-xapuwavamos.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0430/4296/3613/files/wafoxepi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7238/8246/files/26819594092.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0695/0557/files/automation_anywhere_control_room.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0469/0581/files/breast_cancer_signs.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/9547/2793/files/lewulul.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xumilegimazuguvabunozanik.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0452/4644/7776/files/40713146127.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/4540/2277/files/kings_of_crunk.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0447/5705/7687/files/klasifikasi_asma_pada_anak.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/3720/2344/files/80497786038.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_off0000503f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x503F | 5320 bytes |
SHA-256: a06197dca6b2fd7ff1f6d8dbe6a411f74f94336c88fbd78c665fe9f9fbad26b9 |
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font_01_sfnt_off00006217.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6217 | 10268 bytes |
SHA-256: 8987aedd929e056a5164be2c7385d6f2998fcfe2b134af02dbd42557c50d939a |
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font_02_sfnt_off00008576.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8576 | 16092 bytes |
SHA-256: ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073 |
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font_03_sfnt_off00009a3e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9A3E | 4324 bytes |
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361 |
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