MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link to a known malicious redirector, ttraff.cc, disguised with a seemingly relevant keyword. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains the same redirector URL and numerous other URLs hosted on various domains, suggesting a link farm or distribution network. The presence of a malicious redirector indicates an attempt to lead the user to a malicious site, likely for further exploitation or credential harvesting.
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.cc/wb?keyword=elementary%20combinatorics%20pdf In PDF document text
- http://files.encoreth.com/uploads/1/3/2/6/132696030/debewosoxegibe_nefolejokiv.pdfIn PDF document text
- http://files.emrglab.org/uploads/1/3/0/7/130776592/kagiwiwagib.pdfIn PDF document text
- http://files.wonderfulthings.org.uk/uploads/1/3/1/4/131437312/lawefamamina.pdfIn PDF document text
- http://files.jakeblakemetals.com/uploads/1/3/1/4/131437380/9569951.pdfIn PDF document text
- http://files.eurekaforensicservices.com/uploads/1/3/2/6/132681378/kufovofafejotudadu.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/1/0427/7708/4070/files/pewikinudoxi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9092/8026/files/sownictwo_angielski_poziom_a1.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3332/9817/files/43464921082.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/7996/4574/files/62826872600.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9890/6528/files/50745324754.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7908/9824/files/83757119759.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6245/9544/files/guwazubamevelapudo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5653/7505/files/don_giovanni_overture.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9599/0175/files/surizuvivaloxaruv.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3781/0075/files/lezobodizajiximani.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6499/9590/files/xamakukaba.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3490/1671/files/zufojunajajadal.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/2720/2205/files/wozivirapesorumewosamab.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000089f2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x89F2 | 5288 bytes |
SHA-256: e541758f17be3af02acbae67a77042835b8502490f9e3b472525ff77852153fc |
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font_01_sfnt_off00009bcc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9BCC | 10460 bytes |
SHA-256: 01b3a49f1a1369e65fe0aff2b9e6569707c86cf7338c69cf6ff9d3d1e07e3e88 |
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font_02_sfnt_off0000bf55.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBF55 | 4324 bytes |
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176 |
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