MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wb?keyword=oncocercosis%20caso%20clinico%20pdf', which is flagged as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates the presence of numerous external PDF links, suggesting a link farm or SEO manipulation tactic. The primary goal appears to be directing users to potentially harmful external 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.com/wb?keyword=oncocercosis%20caso%20clinico%20pdf In PDF document text
- http://files.hawaiirootsandbranches.com/uploads/1/3/1/4/131437161/koxipibogukaj_pifodokobaf.pdfIn PDF document text
- http://files.bytheslicegourmetdesserts.com/uploads/1/3/1/4/131438692/lenelede.pdfIn PDF document text
- http://files.armonkdance.com/uploads/1/3/1/4/131409333/xukebisina_tuvunutanaxel.pdfIn PDF document text
- http://files.madlyeclectic.com/uploads/1/3/1/4/131483253/nuwitoduku_xafozovininu_lekilirox_navagad.pdfIn PDF document text
- http://files.geraldinepilgrim.com/uploads/1/3/2/8/132815346/6780435.pdfIn PDF document text
- http://files.truthfulart.com/uploads/1/3/0/7/130740127/fuzivepojulegema.pdfIn PDF document text
- http://files.caseyharvilla.com/uploads/1/3/2/7/132712214/vevuzupakaki.pdfIn PDF document text
- http://files.viktoraskubaitis.com/uploads/1/3/2/7/132741571/tumemebazu_tudusoxe_jusepokofa_fekazalifoxikaj.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://kadawajoxezo.files.wordpress.com/2020/06/perogilawovukowawex.pdfIn PDF document text
- https://kerejib.files.wordpress.com/2020/07/13401227733.pdfIn PDF document text
- https://xirobeparaz.files.wordpress.com/2020/07/xesataluvure.pdfIn PDF document text
- https://magapabiv.files.wordpress.com/2020/07/21297499413.pdfIn PDF document text
- https://kavomigazera.files.wordpress.com/2020/07/47553391742.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13977390730.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18813115042.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86399573169.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rapuz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nisej.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94448736580.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55742160690.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 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000732b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x732B | 4884 bytes |
SHA-256: c92c32cabf1b9bef56a8e935e48372a5b61898922a9ce899a58fef246243d107 |
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font_01_sfnt_off000083c2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x83C2 | 12852 bytes |
SHA-256: a0b4a595763f041d4bf6b2dc603320746483806efd7e3799b9b9a2da2a391ecc |
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