MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains a link farm and a redirector to malicious infrastructure, disguised as search results for a technical book. The ML classifier strongly indicated maliciousness, and the presence of numerous embedded links suggests a SEO poisoning or link farm attack. The document body itself is heavily obfuscated and contains a URL that is part of the link farm.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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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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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=lectures+on+quantum+mechanics+weinberg+pdf
- http://files.tennisunderthestars.net/uploads/1/3/1/4/131406412/b9800cb.pdf
- http://files.karenflanneryphotography.com/uploads/1/3/1/4/131482819/vinikokijuwekiwos.pdf
- http://files.sueannecelebrant.com/uploads/1/3/1/4/131437351/26ff42c.pdf
- http://files.artbysarabardin.com/uploads/1/3/0/7/130776602/gusimorutojemuro.pdf
- http://files.zoewilsonnutrition.com/uploads/1/3/1/4/131437636/1016373.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0432/1384/8733/files/bifunigivegevinak.pdf
- https://cdn.shopify.com/s/files/1/0435/1030/0831/files/barney_and_friends_songs.pdf
- https://cdn.shopify.com/s/files/1/0428/9776/8614/files/dezinozu.pdf
- https://cdn.shopify.com/s/files/1/0433/7798/3653/files/zikifijipinunod.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tikumakosesik.pdf
- https://cdn.shopify.com/s/files/1/0432/6552/3870/files/6419308021.pdf
- https://cdn.shopify.com/s/files/1/0434/5564/3813/files/76566610696.pdf
- https://cdn.shopify.com/s/files/1/0432/8076/0990/files/90535637615.pdf
- https://cdn.shopify.com/s/files/1/0429/8027/8426/files/dujugifevibopezo.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sigejorivuzogekos.pdf
- https://cdn.shopify.com/s/files/1/0435/7970/3451/files/39013503310.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000067af.binf5fa98ca6cdbe2b0975136deae054b47e6a607ffd4d33ed777c4de34074c52a9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x67AF | 5836 bytes |
font_01_sfnt_off00007b74.bin537f418548554fb8a880127145b6548aa31c055be6a80f5dc2000eb942ea5ffe |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7B74 | 11240 bytes |
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