MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic identified a link to a known malicious redirector, and another indicated a PDF link farm. The document body, though heavily obfuscated, contains text related to 'horse racing handicapping software spreadsheet' and includes the malicious redirector URL and several other PDF URLs, suggesting a lure to download further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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.link/pify?keyword=horse+racing+handicapping+software+spreadsheet In PDF document text
- http://files.wandapayne.com/uploads/1/3/0/7/130739567/e9f4b5f19c4877c.pdfIn PDF document text
- http://xojire.michaeljperkinsschool.org/uploads/1/3/1/4/131437626/035437631ecce9.pdfIn PDF document text
- http://files.kathrynyancey.com/uploads/1/3/0/7/130775009/63ed6a.pdfIn PDF document text
- http://tapezi.lindseyplantationequipment.com/uploads/1/3/0/7/130739164/3fcafa6.pdfIn PDF document text
- http://toruba.lalunaminiatures.com/uploads/1/3/0/9/130969685/5975041a2a3b262.pdfIn 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/5de1df_2a28a9aeea024c5a8f14087a47cae296.pdfIn PDF document text
- https://static.usrfiles.com/ugd/a1fb72_fec3deac358543098bfb7e434d6f23f7.pdfIn PDF document text
- https://static.usrfiles.com/ugd/77eba6_1a9b6858146243ad905101f5b911bacd.pdfIn PDF document text
- https://static.usrfiles.com/ugd/d38238_8b78d6e2a07e4a5ba64f0d51ccf2fef1.pdfIn PDF document text
- https://static.usrfiles.com/ugd/e6e573_2f2e89807462444880b946831ab279ab.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_fde285ca2f0545b58b282b894a371ec7.pdfIn PDF document text
- https://static.usrfiles.com/ugd/ac51ce_6464339b05dd43c0be25061afe4d47f5.pdfIn PDF document text
- https://static.usrfiles.com/ugd/9c0842_89e89c191abf481d8fcad8f09abe6755.pdfIn PDF document text
- https://static.usrfiles.com/ugd/5ecadc_4135af9348e04919a2ce7bbbed2f0380.pdfIn PDF document text
- https://static.usrfiles.com/ugd/857e61_f7118d8542524579af44fd26a543b2e8.pdfIn PDF document text
- https://static.usrfiles.com/ugd/ad2ade_e68b8b845fef48a593b9e2456858235b.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006811.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6811 | 5440 bytes |
SHA-256: 43e78b87debc6eda78f19c4d89039a73d09c4732bd642e818cae1cd678df0d8b |
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font_01_sfnt_off00007a9b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7A9B | 10940 bytes |
SHA-256: cb23b011ac7f20a36eed6ed7ae1744c03304f1624d29bb5558f82e8145a3f0c3 |
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font_02_sfnt_off00009fef.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9FEF | 17600 bytes |
SHA-256: 87ade7c7330b596c11337bd0050044cd9f9aeed2538b1d0a23bd26875d57f908 |
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