MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a significant number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, designed to appear as legitimate book downloads. One critical heuristic firing indicates a direct link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=data+structures+and+algorithms+best+book+pdf', suggesting the primary intent is to redirect users to malicious content. The document body, though heavily obfuscated, also contains this URL and other Shopify links, reinforcing the lure.
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=data+structures+and+algorithms+best+book+pdf In PDF document text
- http://files.kaleenacarter.com/uploads/1/3/2/3/132303061/mewapavapajeka-walukiwu.pdfIn PDF document text
- http://files.aimeeswenson.net/uploads/1/3/1/4/131438299/7298d224.pdfIn PDF document text
- http://files.cathyxwu.com/uploads/1/3/1/3/131383305/balogapugiligo.pdfIn PDF document text
- http://files.undertheirrelevance.com/uploads/1/3/0/8/130874120/94c144.pdfIn PDF document text
- http://xalona.manonsteyaertart.com/uploads/1/3/0/7/130738909/3d7f3856660.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/1/0437/9151/5808/files/polijok.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6601/5400/files/ecocardiografia_fetal.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5942/1092/files/15006409663.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9721/8471/files/the_assertiveness_workbook_free.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5611/0487/files/faxerixovojamepefexize.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/4456/1318/files/tomb_raider_legend_walkthrough.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0655/7341/files/30055327768.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8242/4215/files/dragon_ball_legends_android_19.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1392/3228/files/leveredamijufogojezamese.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6055/9013/files/62210054832.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_off00006f5f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6F5F | 5772 bytes |
SHA-256: 5a2a4a975b9a85584f928bc726d48ae623909802ec282870eb271dcbaf61caa9 |
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font_01_sfnt_off000082d0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x82D0 | 3216 bytes |
SHA-256: 9e3906ea17518ed8f141ea7ddbbd26502a6d93f7afb33aa5d442ca8cf419ef21 |
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font_02_sfnt_off00008f39.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8F39 | 10424 bytes |
SHA-256: 8ad713e8d525b20f9ab9498d38f4541066666e12d055878595308d47a43a9a56 |
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font_03_sfnt_off0000b30c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB30C | 17516 bytes |
SHA-256: 8de9fc0338833fab89181190567c0337f91c2ea9dbdc17021a3d91c4ec0152c5 |
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