MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector identified by heuristics. This suggests the document is designed to trick users into visiting a malicious site under the guise of providing a PDF on a technical topic.
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/pify?keyword=differential+geometry+and+topology+pdf In PDF document text
- http://files.matteoluciani.com/uploads/1/3/1/3/131383544/8e8bfdb8ee2.pdfIn PDF document text
- http://files.raleighchamber.org/uploads/1/3/2/8/132814415/nawesixiralawid-bixiwat-zuwadetub.pdfIn PDF document text
- http://zutom.kvclissold.com/uploads/1/3/0/8/130814328/sajoronaj_sisesabisuwixe.pdfIn PDF document text
- http://files.seafom-friendsofmontessori.org/uploads/1/3/0/7/130775002/jovonenugujos.pdfIn PDF document text
- http://files.sherwoodfootball.org/uploads/1/3/1/4/131409009/4079754.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.opentle.orgIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0440/6696/3621/files/fedev.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0803/2922/files/american_states_abbreviations.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/6498/1664/files/blood_pressure_normal_range.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5466/8705/files/gobefagoxikazi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6127/2983/files/agroecology_fao.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7178/9470/files/xugufilotisepowetono.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/4523/9456/files/82997285566.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0745/1042/files/30494651373.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/6735/6824/files/rapugikaguxejonuzu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5205/6227/files/uf_law_cost_of_attendance.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://www.gnu.org/licenses/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 5
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000618c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x618C | 5072 bytes |
SHA-256: ab376e74e26378a89c6e6c9c072b72f0a5a9538fa910f89f2fd4a4c10240b337 |
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font_01_sfnt_off000072b4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x72B4 | 6264 bytes |
SHA-256: 131a4805b5fbfdc9dd649613e58a8d4d671fd9ada56e94fb0053d66320e02390 |
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font_02_sfnt_off00008309.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8309 | 12796 bytes |
SHA-256: eda261cec61628d8dede2b705734e6a885bebeb5ef2198afdf6ca96b39978821 |
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font_03_sfnt_off0000ac48.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAC48 | 16272 bytes |
SHA-256: 36ed9caf719e0849df8fd87ade7d51f3d04b8af5454f1aaa896d38a56b473f78 |
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font_04_sfnt_off0000c1ad.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC1AD | 4324 bytes |
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2 |
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