MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was identified as malicious due to its structure, which includes a large number of embedded links to external PDF files, characteristic of a link farm. One of these links, 'https://ttraff.ru/pify?keyword=rebuild+air+cooled+vw+engines+hp+255+pdf', points to known malicious redirector infrastructure. The document body contains garbled text along with the same URL, suggesting a lure or obfuscation attempt. No scripts were extracted, and the primary malicious activity observed is the redirection via the malicious URL.
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=rebuild+air+cooled+vw+engines+hp+255+pdf In PDF document text
- http://files.lakewashingtonsaddleclub.org/uploads/1/3/1/8/131857916/64e9fa.pdfIn PDF document text
- http://xedux.conwytours.net/uploads/1/3/1/3/131379833/7554b3e571332.pdfIn PDF document text
- http://files.immune-tolerance.fr/uploads/1/3/0/7/130739233/bae3e7a7.pdfIn PDF document text
- http://files.blacksheeprugby.com/uploads/1/3/0/7/130775866/7566f.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/1/0437/1785/3335/files/avi_to_wmv.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99914628395.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/5198/3772/files/pepenirexoxodukafifesadar.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15501301831.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5564/3813/files/55880133837.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5512/8477/files/butox.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2139/3320/files/97137143555.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6885/8280/files/63924904684.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7230/6843/files/fixorasadipukogukixu.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000a32f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA32F | 4416 bytes |
SHA-256: 6fdb61d240193fb116c1b0573015fb1ecb1f96ad2228b5a36100810bda13bf83 |
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font_01_sfnt_off0000b297.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB297 | 5972 bytes |
SHA-256: 2abd467896e0d6315d9f47e8ae3c05e5fe09d67c56db90c9beda702b2d78657c |
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font_02_sfnt_off0000c703.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC703 | 12716 bytes |
SHA-256: 67a56fbbe69d653d6e7da89f152e08d0f59efb8ac75f3bcff3bc16e792a83542 |
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font_03_sfnt_off0000efe9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEFE9 | 16116 bytes |
SHA-256: 10bdf1da1f14de10963fa7e0db0c3c3b39de0ddf5d1d591acf32bdd77afa173d |
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