MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, suggests a lure for 'brush lettering free practice sheets'. The presence of a malicious redirector and a large number of external links indicates an attempt to drive traffic to potentially harmful sites, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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/pify?keyword=brush+lettering+free+practice+sheets In PDF document text
- http://files.nikkifountainphoto.com/uploads/1/3/1/6/131606059/ac15ac633c44.pdfIn PDF document text
- http://files.brantfordminorsoftball.ca/uploads/1/3/1/4/131452959/fe1cf5.pdfIn PDF document text
- http://files.madesimplydev.com/uploads/1/3/0/7/130775145/443176ec.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/1/0432/0821/2638/files/38326730735.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/6945/7063/files/tevadosupiju.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/5934/5573/files/vadutajolo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/2868/3674/files/22154919081.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/8998/4674/files/firepami.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0058/6649/files/jiwigitod.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9201/7305/files/10109572041.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zupapinited.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3139/6503/files/31035070613.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5267/9836/files/mupabarapivuxikemikoto.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4605/1744/files/54527260837.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6191/1460/files/tunudiperexibupalajelule.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7980/2782/files/xefitisanujat.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00007ca9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7CA9 | 5096 bytes |
SHA-256: 348fb357c411f2de930295d80b97f6f48e726253622bbd83187667214c7731f7 |
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font_01_sfnt_off00008dfa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8DFA | 10520 bytes |
SHA-256: 0fbca93755a688b537942ca42a6aad4dadbca5760a0f68851b9e2cdf86c488f2 |
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font_02_sfnt_off0000b1a6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB1A6 | 16328 bytes |
SHA-256: b7c4d71780b68f8c2c3b58fa8cc856106e4c7a8c1d1a9f62447c1c1e59527dfd |
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