MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure at https://ttraff.com/pify?keyword=uncle+tom+s+cabin+text+pdf. This suggests the document is designed to redirect users to malicious content. The presence of a large number of external PDF links, many hosted on Shopify, further indicates a link farm or SEO manipulation tactic to distribute malicious content. The ML classifier also strongly flagged this PDF as malicious.
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.com/pify?keyword=uncle+tom+s+cabin+text+pdf In PDF document text
- http://files.taylorbrothers.org/uploads/1/3/1/4/131407423/218196.pdfIn PDF document text
- http://files.syandash.co.uk/uploads/1/3/0/7/130739688/12204bc37034a3e.pdfIn PDF document text
- http://files.nicolemillersandiego.com/uploads/1/3/2/6/132682040/gofunomujepiluv.pdfIn PDF document text
- http://files.hsartinc.com/uploads/1/3/1/4/131414743/d0591f46d.pdfIn PDF document text
- http://files.sherwoodfootball.org/uploads/1/3/1/0/131070612/ee02c901e2e.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42632515291.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1782/2620/files/70822043656.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5943/0054/files/12463157706.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5636/4709/files/revamoduk.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0238/7867/files/tunemevisomanemuremel.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3340/2266/files/40068147641.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9482/7415/files/rimazexa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/8442/1022/files/novobajulo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/5687/1062/files/1323968028.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1781/3661/files/76131689863.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/0512/3493/files/11639047870.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/6621/3031/files/lafokadixaxu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/7235/4459/files/pozalujugibabakelekizi.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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00017696.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17696 | 5192 bytes |
SHA-256: cd59c79f167170f2e99040c4683ba99bc22fb25d773d36ac4c1af1599376923c |
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font_01_sfnt_off00018825.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x18825 | 10508 bytes |
SHA-256: ddfe95b8d6924c5b1e76ba9842ce9a025db8da9a36df36188da2e36f30107c32 |
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font_02_sfnt_off0001ac25.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1AC25 | 4324 bytes |
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333 |
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