MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a large number of embedded links, many pointing to external resources, which is characteristic of a link farm or redirection scheme. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.com/wb?keyword=identidades%20trigonometricas%20hiperbolicas%20pdf'. The ML classifier also strongly indicated maliciousness. The document body itself is heavily obfuscated but contains references to the redirector URL and other Shopify-hosted PDF files.
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/wb?keyword=identidades%20trigonometricas%20hiperbolicas%20pdf In PDF document text
- http://files.drjuliewilkening.com/uploads/1/3/0/8/130873893/xodonugasebi.pdfIn PDF document text
- http://files.servastaiwan.org/uploads/1/3/1/3/131398333/walivupipevawi_xejinopeguvuni.pdfIn PDF document text
- http://files.rashidacostaauthor.com/uploads/1/3/1/4/131437380/nagasimu-nodumotixotob.pdfIn PDF document text
- http://lomefujuj.executiveshuttlebuslimo.com/uploads/1/3/2/8/132816066/6073044.pdfIn PDF document text
- http://files.inhiminc.org/uploads/1/3/2/6/132696104/sazesivefopumebetuwu.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/1/0428/9573/6988/files/40769170320.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2076/2783/files/journey_aaron_becker_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1014/6983/files/bebifumedapilejedesuvag.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3976/0295/files/emacs_cheat_sheet.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/4659/8821/files/asturias_guitarra.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/5089/9368/files/hipertrofia_de_adenoides_en_nios.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/4742/9031/files/play_prodigy_game.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2875/0241/files/exercice_algorithme_tableau_corrig.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/4189/1238/files/zorua_ultra_sun.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/1231/6584/files/industrial_centrifugal_blower.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/2524/3039/files/11325900156.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/4891/9450/files/91036659400.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_off00006cf7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6CF7 | 5648 bytes |
SHA-256: 155634820ff65840727c441b5b6bba46d236544811c1e98e76b3dbbc96222054 |
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font_01_sfnt_off00007ff2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7FF2 | 15844 bytes |
SHA-256: 68b072adf6c1f9c1a641cea8a7bd6521da98065371ac9e0c673a463e64380b69 |
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font_02_sfnt_off0000b197.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB197 | 16120 bytes |
SHA-256: f60772b6869086652a040dee328c3d1f18c5591217e92cd57bc35e79e491fd65 |
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