MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file was flagged as malicious by an ML classifier and contains a significant number of embedded URLs. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which likely serves to obscure the ultimate destination of the attack. Another critical heuristic indicates a large external PDF link farm, with many links hosted on 'cdn.shopify.com'. The document body contains the redirector URL and several Shopify-hosted PDF links, suggesting a lure to download further 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=cotangent+bundle+pdf In PDF document text
- http://files.classwithchris.com/uploads/1/3/1/4/131452922/lidirem_bavige_kinupepepazew_salegesabudu.pdfIn PDF document text
- http://files.patrickdeanhubbell.com/uploads/1/3/1/4/131454034/7177565.pdfIn PDF document text
- http://files.cheshireneuroactive.org/uploads/1/3/2/8/132815045/5706238.pdfIn PDF document text
- http://files.paxonphysics.com/uploads/1/3/0/7/130775506/bopusuboporuxo.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/1/0431/5955/2166/files/mimatorodu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/1394/6018/files/gotomibozokuxukogim.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/6987/3054/files/ongc_annual_report_2020_19.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1415/2607/files/62022326211.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16216600544.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6983/2354/files/wulitavenogo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mizamolapo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/3182/2485/files/54808172581.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4065/2960/files/46344678748.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7131/5876/files/80355721610.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6952/1568/files/1940801049.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/2788/9302/files/biluzowovitegu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/2282/6142/files/6246269731.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_off00006567.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6567 | 4980 bytes |
SHA-256: fd02f87ddc33fe40556d2f34a9138f9c470551f2e4c00ba325a7b164d3bf9dad |
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font_01_sfnt_off00007669.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7669 | 10996 bytes |
SHA-256: f8d31e9cf090db315e669746ece8f604e7835a1f0a2d999d67e4b508f9da105a |
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font_02_sfnt_off00009c33.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9C33 | 16432 bytes |
SHA-256: d0f86685491820483e019dc62a2885d68abfc5c047010a3830812f985234d3a7 |
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