MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document contains numerous links, many of which point to a redirector service known for hosting malicious content. The primary redirector URL, 'https://ttraff.ru/wb?keyword=percentage%20word%20problems%20worksheets%20for%20grade%205', is designed to lure users with seemingly educational content but ultimately leads to malicious infrastructure. The document body, though heavily obfuscated, contains this primary redirector URL and a large number of other URLs, suggesting a link farm or SEO poisoning tactic to distribute malware.
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=percentage%20word%20problems%20worksheets%20for%20grade%205 In PDF document text
- http://files.elitementorshop.com/uploads/1/3/1/6/131636655/tekevezotupifug-soril-terozinonagumeb.pdfIn PDF document text
- http://files.fridayharbour.info/uploads/1/3/1/6/131637316/7933170.pdfIn PDF document text
- http://files.campusco-lab.com/uploads/1/3/1/3/131398336/tejegero.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/1/0432/8466/0380/files/43561993858.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8617/5651/files/simpson_diversity_index.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8212/9320/files/zisoxirakipunepepojajajod.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2412/9946/files/47508888019.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8347/2802/files/totadoremagarano.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2214/8003/files/dodupap.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/8638/0189/files/67642875890.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0450/2038/1342/files/online_magazine_free_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/6719/6063/files/jimelarilov.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3310/0439/files/jetotidakajapoze.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7541/2902/files/98820940854.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8456/2086/files/27781923829.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8771/4721/files/kudosorefidozigajaj.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005f24.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5F24 | 5732 bytes |
SHA-256: 864731fc457403289e08f3a9a627adb4d71d679c1b2e329fc6d071b584a4ec79 |
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font_01_sfnt_off00007288.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7288 | 9996 bytes |
SHA-256: 8e739dc37fc76220f120ba1eeb515a1469938d821aaba287a4075eceb60dae1f |
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font_02_sfnt_off000094c9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x94C9 | 4324 bytes |
SHA-256: 781b9fae2fb9201b4a05d2041fea553bb2973f1d011ab9c51e3326c72e342c60 |
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