MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wb?keyword=uppsc%20previous%20year%20question%20papers%20in%20pdf'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains. The document body, though heavily obfuscated, also contains the same redirector URL. This suggests a social engineering attempt to lure users to malicious infrastructure, likely for further exploitation or phishing.
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=uppsc%20previous%20year%20question%20papers%20in%20pdf In PDF document text
- http://buzera.petercosimoleather.com/uploads/1/3/0/7/130776177/xivavo.pdfIn PDF document text
- http://files.theborzoishop.com/uploads/1/3/1/1/131164355/mamuriwegun.pdfIn PDF document text
- http://files.hornsbyptsa.org/uploads/1/3/1/3/131379434/bomujakurufilo.pdfIn PDF document text
- http://files.strosebasketball.com/uploads/1/3/0/7/130776054/2702146.pdfIn PDF document text
- http://files.gatewaylegacyprep.com/uploads/1/3/2/3/132303230/pinorane.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/1/0431/3815/4653/files/18377735757.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/61286624564.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6769/4490/files/14631976073.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4557/6088/files/20062699921.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8627/4967/files/vewesasusu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/7747/4206/files/95644842288.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/3941/6732/files/24554540291.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9586/8057/files/minoduwevitudis.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4257/0401/files/kidde_smoke_and_carbon_monoxide_alarm_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7201/1941/files/gulavimofe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1914/0253/files/togekowineduguxidegur.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3046/3142/files/stevens_320_12_gauge.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44411244229.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8471/7979/files/vapadubujene.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/6974/4028/files/nitifasirowe.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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000068b3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x68B3 | 5396 bytes |
SHA-256: 6477859dbb39791de4cf1edb2d66a357d902565bfc166c6b0f1a3712a8394a7b |
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font_01_sfnt_off00007b29.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7B29 | 10292 bytes |
SHA-256: e2e617a42dc1b5fab5a3d1dc72b8f839df548b646bed721c1f13f24680031157 |
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