MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is ttraff.ru, which is used in conjunction with keywords suggesting a lure for medical information. The document body, though heavily obfuscated, contains metadata indicating it was generated by wkhtmltopdf, a tool sometimes used to create malicious documents.
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.ru/wb?keyword=umeclidinium%20davis%20pdf In PDF document text
- http://files.dsccstandish.org/uploads/1/3/0/7/130776001/1851537.pdfIn PDF document text
- http://files.ourhauntedtravels.com/uploads/1/3/0/9/130968984/8332602.pdfIn PDF document text
- http://files.sbworldtravel.com/uploads/1/3/1/4/131453241/5446667.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/1/0433/9879/1322/files/36085544296.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6646/6216/files/xaxifusoka.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45397061855.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/2762/0249/files/pekaziromuvi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/9963/4328/files/lonumebiri.pdfIn PDF document text
- https://nafevulaxa.files.wordpress.com/2020/07/nilibuxuroligabemenupelok.pdfIn PDF document text
- https://gomepimus.files.wordpress.com/2020/06/tokofojetagid.pdfIn PDF document text
- https://pawelulewo.files.wordpress.com/2020/06/97299099457.pdfIn PDF document text
- https://kufakim.files.wordpress.com/2020/06/66156467232.pdfIn PDF document text
- https://tavatolu.files.wordpress.com/2020/06/tixapitumirepabituva.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9826/0124/files/figokiti.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6137/1290/files/62733946189.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/4924/5082/files/xubol.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tosinumemelijigejidab.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/5596/2522/files/78246252351.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/8148/2919/files/rubuvofejudalavevigoxopuv.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53262414385.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
🗂 Part of campaign:
dsccstandish.org
4 samples
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000073b5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x73B5 | 4948 bytes |
SHA-256: a0a91c653012b325c12b346bb00d4bd2c2658610ecca5ad5b43231a106c94096 |
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font_01_sfnt_off00008475.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8475 | 9880 bytes |
SHA-256: ebcf255acfda12ed581894927d0f6755021a0b96bbbd4e951ac8e6021c26aa17 |
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