MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a calculus textbook solutions manual. The primary malicious URL is https://ttraff.cc/pify?keyword=calculus+larson+9th+edition+solutions+manual+pdf, which likely leads to further malicious content. No scripts were extracted from this sample.
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/pify?keyword=calculus+larson+9th+edition+solutions+manual+pdf In PDF document text
- http://files.peeplesdesigns.com/uploads/1/3/0/7/130776075/lupogekizo.pdfIn PDF document text
- http://files.pro-help.co.uk/uploads/1/3/1/4/131482822/towojakolulaxax_lubepamikububo_fagajug.pdfIn PDF document text
- http://files.justinthomas.net/uploads/1/3/1/4/131438708/zunonafiz.pdfIn PDF document text
- http://files.saintcatherineorthodoxchurch.org/uploads/1/3/1/4/131452735/5a18fb010efa64.pdfIn PDF document text
- http://files.distributivesolar.com/uploads/1/3/0/8/130813301/3170035.pdfIn PDF document text
- http://www.gust.org.pl/projects/e-foundryIn PDF document text
- http://dejavu-fonts.org/wiki/LicenseIn 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/1/0431/6001/0912/files/6041215244.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0821/2638/files/810861154.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0191/3244/files/88664692792.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0460/8155/files/kozebop.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9313/9364/files/11184012267.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0531/3177/files/dozadawusiko.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/33971068516.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2921/7958/files/gisexuzinevu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8819/9328/files/vizonosabedux.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/6903/1078/files/75751305409.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/2026/2308/files/kabelogutilolakipew.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/5827/5238/files/povomuxaduwozexofo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1912/4382/files/wapopizuwu.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_off00016973.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16973 | 2012 bytes |
SHA-256: 2df0ec481a02092c558726d1d7f641e0bc431223264d4eb581407d2a289ee281 |
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font_01_sfnt_off00017238.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17238 | 5456 bytes |
SHA-256: 58fe59c83f15c8528bf5060071f289a0b161c65be220a39690438662eb447d91 |
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font_02_sfnt_off0001848a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1848A | 18388 bytes |
SHA-256: 13144f17e71fe779862494dfdb3b95cc3362876d02e45214a7a7509073bcc7c1 |
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