MALICIOUS
194
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 a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/wb?keyword=dengue%20pdf%20in%20bengali', which is flagged as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this, indicating the document's primary purpose is to redirect users to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' further supports this by identifying a mass of external PDF links, suggesting an attempt to manipulate search engine results or distribute 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/wb?keyword=dengue%20pdf%20in%20bengali In PDF document text
- http://files.shsoh.com/uploads/1/3/1/4/131406744/mujupirawoz.pdfIn PDF document text
- http://files.gilphotography.com/uploads/1/3/2/7/132712214/lesuw_tinepapoga_xesemalibi_wovib.pdfIn PDF document text
- http://malekum.premierbreederwebsites.com/uploads/1/3/1/1/131163763/a79b2913fb.pdfIn 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/1/0429/7415/0809/files/20899507359.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0451/7340/7893/files/botod.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84005007378.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3624/5144/files/60079668967.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2194/3463/files/92479367245.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7596/8928/files/govemojivudefugi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4424/1562/files/cuales_son_los_generos_periodisticos.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0878/5562/files/business_analytics_case_studies.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3119/0952/files/python_greek_letters.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/5907/6502/files/zowabukoxamudova.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6620/4066/files/60805827426.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8787/8549/files/arraylist_implementation_java.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/9612/1252/files/alleluia_randall_thompson.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.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
- http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000066e3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x66E3 | 5072 bytes |
SHA-256: 3c223b53971c297b6aac252d27d64094edfe51af7ea036c271f9c246fb08a3b5 |
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font_01_sfnt_off00007839.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7839 | 12204 bytes |
SHA-256: cef67afd7f2e1956025c94b30988445356cfb2351f6469370b07727392a8b7f5 |
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font_02_sfnt_off00009d15.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9D15 | 9992 bytes |
SHA-256: 6094c7aee2c3fba73ef7a1e14f976fc48683c08e18ad4dec8c90a93623736079 |
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