MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'obstructive jaundice' and mentions 'wkhtmltopdf', indicating it's likely a crafted document. The primary malicious IOC is the redirector URL, which is designed to lead users 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.cc/wb?keyword=obstructive%20jaundice%20adalah%20pdf In PDF document text
- http://files.brisbaneartclasses.com/uploads/1/3/0/8/130874210/dd9d11863f2e.pdfIn PDF document text
- http://files.cfdebate.com/uploads/1/3/2/7/132741764/miwumigugiramimoxod.pdfIn PDF document text
- http://files.thanehouse.com/uploads/1/3/0/7/130775977/tubowefono.pdfIn PDF document text
- http://files.garvinhunter.com/uploads/1/3/1/6/131637853/jejoxaruguluz_durul_nodujizivabo.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/1/0428/9835/8432/files/ziwodukujaluladiludu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7854/9665/files/21020748462.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8582/4154/files/laduzizuv.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5040/1943/files/fevemevekunokowigulesab.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4684/6107/files/37788683996.pdfIn PDF document text
- https://xivuwor.files.wordpress.com/2020/06/29518772777.pdfIn PDF document text
- https://mutebiduv.files.wordpress.com/2020/07/96342896698.pdfIn PDF document text
- https://guzedaf.files.wordpress.com/2020/07/35735427353.pdfIn PDF document text
- https://sepuliw.files.wordpress.com/2020/07/napiz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1312/8863/files/vojeke.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53607129813.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6275/5490/files/63473612277.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7278/2489/files/wokogirekorepibevir.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/2253/3276/files/zutevijawugimudexedetu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5040/0928/files/welav.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5178/6135/files/69472129643.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/7881/1797/files/94707920009.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_off00008c06.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8C06 | 5320 bytes |
SHA-256: 582f5a4e8673aced7815352c7bb912e91d43cb202f3e850677ffcb9a758205c8 |
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font_01_sfnt_off00009e11.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9E11 | 9844 bytes |
SHA-256: 4f964890ea06540dfb305081b21ec946458a69018f9a8c92968daf346097d1df |
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