MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains numerous links to external resources, a technique often used for SEO poisoning or to redirect users to malicious sites. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which is disguised with a plausible keyword related to biochemistry. The document body is heavily obfuscated and contains the malicious URL, confirming the redirection attempt. No scripts were extracted from this sample.
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=buffers+in+biochemistry+pdf In PDF document text
- http://files.cnmiu14nt.org/uploads/1/3/2/3/132303009/fitupi_zalejotaguf_wepixo_memavoxutozil.pdfIn PDF document text
- http://files.vibrantfarms.com/uploads/1/3/1/4/131437676/638a21c550d73.pdfIn PDF document text
- http://files.angelicharpacademy.com/uploads/1/3/1/4/131483138/narikubi.pdfIn PDF document text
- http://files.benedictegrima.com/uploads/1/3/2/6/132681359/vopukavotepi_guzab_zadojotupozu.pdfIn PDF document text
- http://files.andysmoles.com/uploads/1/3/0/7/130739037/1535329.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/1/0432/3858/8584/files/extens_c3_a3o_chrome_aliexpress.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3989/1357/files/petsafe_wireless_collar_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5203/9328/files/11826586465.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7768/8743/files/14482909753.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8360/4903/files/diniwisetutapotokiponi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2732/5343/files/97458960027.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0444/0922/5382/files/business_model_generation_by_alexander_osterwalder.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0879/4530/files/43408577419.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7594/5113/files/88737424068.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5318/7223/files/mudurufalijugebifoxef.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/4815/7859/files/matlab_for_dummies.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9197/5580/files/jekimebi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7264/2460/files/ceiling_types.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_off0000a8e3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA8E3 | 5444 bytes |
SHA-256: 7bdb7973dff2dee2a128211f9e88c60f4eb18c6cdc4a1905e033808d9742865d |
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font_01_sfnt_off0000bb4b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBB4B | 10272 bytes |
SHA-256: a4e47181071c2a7576f49ce2d643ef73930fd8902255a467485dda12f120373c |
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font_02_sfnt_off0000debc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDEBC | 16116 bytes |
SHA-256: 64e13322576ebe4b9a20b8efdba1cb2c8bc01163a7c4e1ba1f667a2d7cf8e6df |
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