MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Tetralogy of fallot in adults pdf', suggesting a lure for SEO poisoning. The primary malicious IOC is the redirector URL, which likely leads to 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.com/wb?keyword=tetralogy%20of%20fallot%20in%20adults%20pdf In PDF document text
- http://files.raidsb.com/uploads/1/3/1/3/131379406/givetagubivumi-xepesizexatez.pdfIn PDF document text
- http://files.indianabln.org/uploads/1/3/0/9/130969304/989691.pdfIn PDF document text
- http://files.grandmashousellc.com/uploads/1/3/2/6/132681671/bixewef_goperas.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/1/0433/0687/7080/files/vunususojorimit.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0808/9509/files/vitolunakexumuwozafal.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/4259/5239/files/dewejalowi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2561/3475/files/senulagevitison.pdfIn PDF document text
- https://bisapabak.files.wordpress.com/2020/06/fijilogofuwekefedu.pdfIn PDF document text
- https://zelagaxupimo.files.wordpress.com/2020/06/larabudafumojokelotaxe.pdfIn PDF document text
- https://limalido.files.wordpress.com/2020/06/63029636135.pdfIn PDF document text
- https://wuxegura685470280.files.wordpress.com/2020/06/sinojeno.pdfIn PDF document text
- https://nifubija.files.wordpress.com/2020/07/ganozovowinerikisumu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5680/8607/files/49498331847.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8946/1410/files/44783904413.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/9762/9596/files/vudasukun.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7318/3643/files/2570019629.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/10588857949.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3199/4280/files/lenifenurumobo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nuvororixepexovi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3845/7508/files/78155608726.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/85213016947.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_off000080e6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x80E6 | 5144 bytes |
SHA-256: c42f821e44a4a0775a6d52dece544848dc620c2c48d60e9939ee72be25ec1f1c |
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font_01_sfnt_off0000927b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x927B | 13284 bytes |
SHA-256: 5762d77f4d5348c1baaa7859b44cb2ffe655e3d15f36d2d872b8c5191808beb3 |
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