MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'tuberculosis causes pdf' and the authoring application 'wkhtmltopdf', suggesting a lure for SEO poisoning or a link farm. The presence of a malicious redirector and a large number of external links indicates an attempt to drive traffic to potentially harmful sites.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 4
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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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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=tuberculosis%20causes%20pdf
- http://files.graemesteelejohnson.com/uploads/1/3/1/4/131407552/bf387cda384ee.pdf
- http://files.themohicans.net/uploads/1/3/1/8/131871849/3c30e035.pdf
- http://files.greenbaywalleyeseries.com/uploads/1/3/1/3/131379820/7ceca068b69f.pdf
- http://files.joseluismartinezmoreno.com/uploads/1/3/1/1/131164568/lifukusufep.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0431/9281/1681/files/pidupaxozepiziwejux.pdf
- https://cdn.shopify.com/s/files/1/0434/6304/9376/files/radasekinimoritomon.pdf
- https://cdn.shopify.com/s/files/1/0427/5198/3772/files/42308954220.pdf
- https://cdn.shopify.com/s/files/1/0434/0888/3870/files/41955145257.pdf
- https://cdn.shopify.com/s/files/1/0431/7646/0447/files/64617517955.pdf
- https://cdn.shopify.com/s/files/1/0431/7026/7300/files/goramidikogikonajadaneko.pdf
- https://cdn.shopify.com/s/files/1/0430/2965/9797/files/the_ugly_duckling_summary.pdf
- https://cdn.shopify.com/s/files/1/0434/4853/3142/files/midegutedog.pdf
- https://cdn.shopify.com/s/files/1/0437/7139/6257/files/cressi_leonardo_manual.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000071e6.binf94739ad97b0bb605cd58c663f97556aaadb43baad368c84d7d9362db8238fdb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x71E6 | 5236 bytes |
font_01_sfnt_off000083bb.bin54179c5f7a7dc4978100af952da29f840e9957743086f3953343e017aee9f3f0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x83BB | 10516 bytes |
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