MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a malicious redirector link disguised as a download for a popular engineering textbook. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the primary URL leads to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many hosted on cdn.shopify.com, suggesting an attempt to game search engines or distribute content widely. The ML_NYX_PDF_MALICIOUS classifier strongly supports the malicious nature of this document.
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=engineering+mechanics+dynamics+meriam+8th+edition+pdf In PDF document text
- http://files.thelittlebookshop.info/uploads/1/3/0/7/130738996/7562351.pdfIn PDF document text
- http://files.thacva.org/uploads/1/3/0/7/130739202/5cf5b7f571.pdfIn PDF document text
- http://files.nursegonestrong.com/uploads/1/3/1/8/131856769/zofofegubavuba.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/1/0432/0916/2907/files/redozatekidakul.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/9254/8515/files/morrowind_release_date.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0449/8885/8536/files/avd_manager_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5560/4121/files/xudus.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rexalomofovuwazeb.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7205/2643/files/14885447070.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6704/0154/files/55585406617.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/4115/1386/files/vuxaxuvuruvoru.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5595/5613/files/17821450902.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3414/0056/files/vuferegi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7824/5781/files/46379677381.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3201/0152/files/59768029173.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_off00005ae6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5AE6 | 5580 bytes |
SHA-256: b0cdfe289366f0ea58216f2616d31234354c1117b2c900b9249b37b30b6f6edc |
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font_01_sfnt_off00006daf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6DAF | 10320 bytes |
SHA-256: ff4aaa191be6d823e9ae4bb328fd2077c42483c6121038251d700d6479d1d067 |
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font_02_sfnt_off000090e4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x90E4 | 4324 bytes |
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3 |
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