MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous links, many of which point to a redirector service (ttraff.cc) that ultimately leads to other PDF files. This behavior, combined with heuristics indicating malicious redirector links and an SEO link farm, suggests a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains the redirector URL and references to downloadable PDFs, reinforcing the lure.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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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.cc/pify?keyword=binomial+distribution+exercises+and+solutions+pdf In PDF document text
- http://files.cycotron.com/uploads/1/3/1/8/131857920/6612e0.pdfIn PDF document text
- http://files.fcapc.org/uploads/1/3/1/3/131380146/mawewaj.pdfIn PDF document text
- http://files.fullspectrumdoulacircle.com/uploads/1/3/2/6/132681033/3784977.pdfIn PDF document text
- http://files.libertyppg.com/uploads/1/3/1/8/131856632/6874170.pdfIn PDF document text
- http://files.fourcornersveterinarysymposium.com/uploads/1/3/1/3/131384573/b59ad5a0c3c.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/1/0429/4764/1510/files/61751780404.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/6755/3430/files/64817816197.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0270/7616/files/c_language_book_free_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/7395/4204/files/pepuboxoriwosetubilaro.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4071/8496/files/bodewiwagobuzenupuvotuwif.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6604/8164/files/97519311845.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11783771814.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6913/6280/files/msi_afterburner_fps.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/1148/7397/files/should_ve_said_no_lyrics.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/0034/6270/files/karepekozoturazowofamegul.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/1139/8039/files/2020_porsche_cayenne_turbo_owners_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1984/5278/files/22590571164.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_off00006311.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6311 | 5556 bytes |
SHA-256: 4c04259e47e4f4d553e4aa74d99c7128e22ea93966a14b23560c22573fbd9372 |
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font_01_sfnt_off000075d4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x75D4 | 10944 bytes |
SHA-256: 2715b3f1f5a782a2ea71864587b4ef690376de827f01fd1284b2304bf59e8a23 |
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