MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=ap+world+history+reading+guide+answers'. This URL is presented within the document body, disguised as a study guide answer key, to entice users to click it. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on 'static.usrfiles.com'. The primary malicious URL is the most critical IOC.
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.com/wix?keyword=ap+world+history+reading+guide+answers In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://static.usrfiles.com/ugd/9b5f63_30ea47b032c94fb18cb8ec9585cbe7bf.pdfIn PDF document text
- https://static.usrfiles.com/ugd/83b1b3_2efe22b28c9f433ab8cbf7cc25ac5d84.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_13904c4f41c241c282d43c591d4faf7b.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5663/5805/files/69615414014.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6513/0658/files/88120603290.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3058/4213/files/27449747000.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_686d58db60e045199d90aaa4655c0b4b.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_9a260537d8644b40bfbab4801e197c7f.pdfIn PDF document text
- https://static.usrfiles.com/ugd/c1108c_710f738740f14b139cbe805742911835.pdfIn PDF document text
- https://static.usrfiles.com/ugd/a771bd_97c42d720b494f7ab86ad2bb99c8d0f1.pdfIn PDF document text
- https://static.usrfiles.com/ugd/9e14ca_93ce91fafbdd463d9b38b057c5630bee.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_f1c22cce53d44ffab0fb13b1d5cecbab.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_2f3a53aed817421298ef206ac3598351.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_3a4ea0cd60014030b103700e0c3e7d7e.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
- 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://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 6
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000068d6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x68D6 | 6872 bytes |
SHA-256: cfd810a5ea282119da4c1abf509a1e6bf8c77e42bfdbea3e308bbcdcc7c40f73 |
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font_01_sfnt_off00007a2c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7A2C | 5404 bytes |
SHA-256: 5d4668740cc05fe738d59754a1e5943b1e2543179c7ac5f79caebf13bf57081e |
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font_02_sfnt_off00008c91.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8C91 | 23720 bytes |
SHA-256: 3c4bb5fb1d39812cada2b58d81bc687bbd191738486d7e1ef0c88f5c536889ba |
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font_03_sfnt_off0000cd39.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCD39 | 10788 bytes |
SHA-256: 213e16327f9332b66a9d5198ee4bca041579eddd68ac37125b6b71a3d73804ff |
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font_04_sfnt_off0000f17e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF17E | 16464 bytes |
SHA-256: 8d489ea55310a719cf5f973c213923a8a50238e4bef290c93e06e5a0d7a618b3 |
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font_05_sfnt_off000107b2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x107B2 | 1736 bytes |
SHA-256: 0d9b6ab0354368cdfa5a4e52e4dfb250ede80cec4283e48fafec0a3c1c1d30df |
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