MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links, many pointing to a redirector service (ttraff.ru) that is flagged as malicious. This suggests a link farm or SEO poisoning tactic to drive traffic to malicious content, likely a phishing or malware distribution site. The ML classifier also strongly indicated maliciousness.
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=radiation+heat+transfer+a+statistical+approach+pdf In PDF document text
- http://files.winterhomeschoolconference.com/uploads/1/3/1/4/131437655/xekekasiril-sedusudorawap-mifeniwetipomas-dinuwidutakezux.pdfIn PDF document text
- http://files.scfcommunity.org/uploads/1/3/0/8/130814923/rexikofovita_senakenav_dalen.pdfIn PDF document text
- http://files.marriedbythebeard.com/uploads/1/3/2/6/132695455/fabavivaneferiwuf.pdfIn PDF document text
- http://files.mikejdonovan.com/uploads/1/3/1/3/131379296/tukifotozijudawip.pdfIn PDF document text
- http://files.bcbsca.org/uploads/1/3/0/8/130874566/vubudoz-wifevukufigo.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/1/0439/3458/0891/files/97713874807.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8115/4204/files/vonezagobevenefifawuxe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2770/1665/files/revolutionary_armed_struggle.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1321/8210/files/enter_the_gungeon_brick_of_cash.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6241/9863/files/52977267683.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pejuzesuloroxutebed.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7405/0458/files/gavejas.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5656/1318/files/67224258679.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/72645751706.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/4287/1208/files/58109398855.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9092/8026/files/veneluboxesuzon.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/1019/5605/files/66320001978.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/6827/7415/files/lelusopoxinotol.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9975/0560/files/expedient_homemade_firearms.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_off00004f5d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4F5D | 5248 bytes |
SHA-256: 7b46aae4e99abac37c8732c165c96bfd37f404649c8067165095d41ecd7d1340 |
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font_01_sfnt_off00006138.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6138 | 10064 bytes |
SHA-256: 84ab6fe4d5d4e5e3622e44d73f7be00c30d836623d5b5c3fe0c59d101608ff41 |
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