MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains numerous embedded links, a common tactic for SEO poisoning or redirecting users to malicious sites. One critical heuristic identified a link to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains text that appears to be a lure for a genetics textbook, which is then followed by the malicious URL. This suggests the PDF is designed to trick users into clicking the link, leading them to a compromised or malicious site.
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=livro+genetica+medica+thompson+pdf In PDF document text
- http://files.hoopcubed.com/uploads/1/3/0/7/130775825/veviriw.pdfIn PDF document text
- http://files.heritageelementarypta.org/uploads/1/3/0/9/130969018/mezowoviwebigu-buzajudubisis-jedikunata-mepisa.pdfIn PDF document text
- http://files.poundridgegardenclub.com/uploads/1/3/1/3/131381614/7451319.pdfIn PDF document text
- http://files.thenatureofthecosmos.com/uploads/1/3/0/8/130814460/tabavabarejol.pdfIn PDF document text
- http://files.stonypointfarm.com/uploads/1/3/1/6/131607565/8932355.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/1/0433/4013/6601/files/bloodborne_chalice_dungeon_guide.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3512/2081/files/19179099867.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6353/2951/files/vixufixudor.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/1297/9869/files/16510325367.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/0017/4504/files/12725260017.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zosakasebiribo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0441/0625/2440/files/the_nexus_minecraft.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/0988/4838/files/2550794251.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0953/2316/files/81799077248.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/7026/6273/files/levefotin.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0147/9321/files/lezelogadosikeviwefifuj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/9969/9866/files/jesatekepobiderijovo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9573/6988/files/dofojujosok.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8494/8380/files/5810724703.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_off00018a8f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x18A8F | 5536 bytes |
SHA-256: 4db4c754b8aa1b1e9fe6ebc2d2313fa93a2fb8e59618f6c7abba98b5c33a52a6 |
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font_01_sfnt_off00019d4d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x19D4D | 14500 bytes |
SHA-256: 507740213d5f5d7101a8b5bc06f96010a4cedd4a20342e1b1c285125a86036c6 |
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