MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.ru) that is known to host malicious content. The document body, though heavily obfuscated, contains references to technical documents and URLs, suggesting a lure to trick users into clicking malicious links. The ML classifier strongly indicated maliciousness, and the PDF structure itself is flagged for containing a link farm.
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=1n34a+diode+datasheet+pdf In PDF document text
- http://files.beccacevans.com/uploads/1/3/2/6/132681545/mubuxafomejasonuki.pdfIn PDF document text
- http://files.millimiracle.com/uploads/1/3/1/4/131407315/lugifo.pdfIn PDF document text
- http://fontawesome.iohttp://fontawesome.io/license/In 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/1/0457/6906/4614/files/chloromatic_3_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5104/9370/files/6654456442.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6083/8050/files/autocad_electrical_symbols_free_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/9972/4703/files/28371655954.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9665/4489/files/vasazowotovesanavame.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4673/9866/files/axial_fan_design_calculations.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0325/6737/files/775816912.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/1153/7053/files/installing_sql_server_reporting_services_2016.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6274/7548/files/pirelegize.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9587/5993/files/mixed_grammar_exercises.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8946/1410/files/tiwamen.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000558d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x558D | 2044 bytes |
SHA-256: 559f5d2af7ed5a9079b0f5ddfa2fb42f8dd07ef35d2a832f059cfdb5d8713328 |
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font_01_sfnt_off00005ef7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5EF7 | 4068 bytes |
SHA-256: 0e98be67eba76635c4b8fe859c6685a7f8be9ebe5c5fe1cf367e745f4f5b5c2f |
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font_02_sfnt_off00006d6f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6D6F | 5212 bytes |
SHA-256: 83ea31c4b3ceae61e3856761459f4437b810043de4ec0c0012a9de1199a1ee6e |
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font_03_sfnt_off00007f30.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7F30 | 15068 bytes |
SHA-256: 8a6882be5a8a96b2a8b317dffd0fb654a15ed484bf628aa98b2305379cfe4985 |
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