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 primary malicious URL identified is ttraff.ru, which is used in conjunction with a lure related to 'automata theory nptel pdf'. The document body, though heavily obfuscated, contains this URL and other links to external PDFs, suggesting a link farm or redirection scheme designed to lead users to malicious content.
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=automata+theory+nptel+pdf In PDF document text
- http://pujod.literaturepsychology.com/uploads/1/3/1/0/131071114/kenurutumufuzefafuja.pdfIn PDF document text
- http://files.beaconchurchofchristgbctx.com/uploads/1/3/0/9/130970009/5637ab.pdfIn PDF document text
- http://files.oakparkfriends.org/uploads/1/3/0/7/130739022/9102350.pdfIn PDF document text
- http://files.jra-vectorworks-cad.co.uk/uploads/1/3/0/7/130739053/da27279a932b.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0429/1254/6975/files/89419025645.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/8298/7158/files/mtd_8_26_snowblower.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0222/3013/files/95012690599.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/1639/4648/files/xogetawadaz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/0575/2997/files/60280181845.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8750/4294/files/45356475682.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/4816/3733/files/24926187439.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/9055/6568/files/gizefofidosowimebaterip.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3001/2316/files/wipivosuwud.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0450/7874/1155/files/school_annual_report_by_principal.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7661/6341/files/zupusuj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6043/6887/files/24697032892.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9791/5545/files/86697512926.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8106/4853/files/2003_mitsubishi_outlander_repair_manual.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
🗂 Part of campaign:
beaconchurchofchristgbctx.com
4 samples
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006140.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6140 | 5028 bytes |
SHA-256: 277c39899e676cfc5d5f3575504380b02848dc6f9b775de39abe0cd45152d1c2 |
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font_01_sfnt_off00007237.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7237 | 10040 bytes |
SHA-256: 52823a19fb5c2fae0e178932318a338c1386f7f3a404e8586f7f46650c8b24f7 |
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font_02_sfnt_off000094a9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x94A9 | 4324 bytes |
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361 |
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