MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains a large number of embedded links, many of which point to a redirector URL (https://ttraff.ru/wb?keyword=proofreading%20marks%20chicago%20manual%20of%20style). This indicates a link farm or phishing attempt designed to lure users to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious.
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.ru/wb?keyword=proofreading%20marks%20chicago%20manual%20of%20style In PDF document text
- http://files.builtempire.com/uploads/1/3/0/8/130813146/2070906.pdfIn PDF document text
- http://files.fennwaypointe.com/uploads/1/3/1/4/131453111/aabf1ee.pdfIn PDF document text
- http://files.ohmygiftshop.ca/uploads/1/3/0/7/130740251/ligogepevixe_bonavolumu_levixomepo.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/1/0438/1881/1552/files/zuvizipevi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37638787324.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/2763/5096/files/78503485391.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4669/9165/files/issendai_sick_systems.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5101/5577/files/todixeguwopitigaxuwopu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/3621/1357/files/23231748488.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3227/3319/files/ralurabexoj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5016/3609/files/auto_mount_usb_drive_raspberry_pi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2073/0020/files/pinusek.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tufajotojitumawudawemir.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4071/8493/files/sebidanifobepodomexezer.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0448/3996/0737/files/31742248174.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1264/4251/files/tasozinolebefexu.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
- https://savannah.gnu.org/projects/freefont/In PDF document text
- http://www.gnu.org/licenses/In PDF document text
- http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006043.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6043 | 5604 bytes |
SHA-256: 3d2f437c6be7279769fbcddc9ad736308f345420dc123827a2f0f66c1934fcc0 |
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font_01_sfnt_off000072f0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x72F0 | 6376 bytes |
SHA-256: a157613c6aaf028b9af2cc9d4608d3bbda48ae25710425bb59fe99668eb3c7c0 |
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font_02_sfnt_off00008294.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8294 | 10312 bytes |
SHA-256: 0ad5ad8b403087012e9c54845ff48f4654e01180940e1d3968a551bd01410358 |
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font_03_sfnt_off0000a601.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA601 | 16244 bytes |
SHA-256: ef3a9980c6f176d080d38ccf8d0bffb40559c0f22eec4ad34b4d8228425b4fd8 |
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