MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of external links, many of which point to PDF files hosted on Shopify and other domains. One critical heuristic indicates that the PDF links to a known malicious redirector infrastructure at 'ttraff.cc'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=topik+advanced+vocabulary+pdf', suggesting a lure to a malicious site. The presence of numerous PDF links, combined with the malicious redirector, indicates a link farm attack designed to drive traffic to malicious content.
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.cc/pify?keyword=topik+advanced+vocabulary+pdf In PDF document text
- http://files.mattcameron949.com/uploads/1/3/1/8/131858592/797692.pdfIn PDF document text
- http://fabibo.scottishceremonies.com/uploads/1/3/1/1/131164250/luvuwobekubapiv-bawekup-jedeneb.pdfIn PDF document text
- http://files.melanysaad.com/uploads/1/3/1/4/131406140/0460026a1a78cec.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/1/0433/3325/5323/files/96585518235.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4065/2960/files/esl_asking_questions_worksheet.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3448/4648/files/nobitimufuvise.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/7573/8527/files/30911459348.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2596/4957/files/5192102186.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9403/2025/files/87154145969.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0944/0933/files/capital_de_giro_e_anlise_das_demonstraes_financeiras_kls.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/3331/1904/files/39633329978.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7542/6721/files/48537334532.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/4802/6780/files/translating_verbal_expressions_into_algebraic_expressions.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56346524494.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3477/1610/files/kelumilobikemarij.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0658/3203/files/sulezafikalipetofaketi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/0780/1501/files/82547261916.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9762/9596/files/39002830369.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00004e0f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4E0F | 5284 bytes |
SHA-256: c69823663aeaea68d83cbefbd0522954ea3972c066716fdcf7844087e32835c0 |
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font_01_sfnt_off00006021.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6021 | 10592 bytes |
SHA-256: b5a4b0caaa346ef5e697d55cf7e03b92572b848e603bd72738837bea97a8cd87 |
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font_02_sfnt_off00008388.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8388 | 16396 bytes |
SHA-256: 321c59ea334f0b0b74574b3bd1f22bdeea3b9bbf2ccfe3a2dd9e77010036b98e |
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