MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF document contains multiple heuristics indicating malicious intent, including links to known malicious redirectors and a large number of external PDF links, suggesting a link farm for SEO manipulation. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=microsoft+visio+2007+free+download+full+version', which is also flagged as a malicious redirector. The presence of a 'download button' heuristic further supports the lure of a fake download page.
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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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=microsoft+visio+2007+free+download+full+version In PDF document text
- http://files.sallyjcurtis.co.uk/uploads/1/3/2/8/132816066/3790766.pdfIn PDF document text
- http://files.stfrancis-sthedwig.com/uploads/1/3/2/6/132682113/2405117.pdfIn PDF document text
- http://files.lifesurprisesyou.com/uploads/1/3/2/6/132681931/xegozanozeluzupisol.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/1/0428/9835/8432/files/16175378270.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0809/7445/files/24175140840.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6780/1749/files/tovuzovilipenifebifisu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9476/0858/files/loser_big_bang_mp3.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zilifevuzumojewod.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vinufew.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kevesuladufutaniwor.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5829/1093/files/55163525412.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3631/0678/files/tukuvuzifo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4646/0830/files/dewalisezamo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6102/6719/files/50114501632.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/5108/8032/files/brad_paisly_celebrity.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/0696/6429/files/sakazufodu.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_off00006f22.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6F22 | 5528 bytes |
SHA-256: 43e11c246d44398e6877e165e7961e6a81d4bd2f74724c349e3a230710b31148 |
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font_01_sfnt_off0000822b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x822B | 10144 bytes |
SHA-256: cfe88791ca48597d03d0fdcd91c962d5efa9afdf48e3c3f5fed736cdd4e57358 |
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