MALICIOUS
104
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a significant number of external links, many of which point to unrelated domains and appear to be part of a link farm. One heuristic specifically identified this as a 'PDF_SEO_LINK_FARM'. The document body, though partially garbled, contains a URL that is also listed as an IOC. This suggests the PDF is designed to host a large number of links, likely to improve search engine ranking for unrelated content while potentially leading users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9857
Heuristics 5
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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External URI info PDF_URIPDF contains an external URL action
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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 http://gregjiel.com/uploads/1/3/1/0/131070207/131070207.html#chiari+malformation+type+one+symptoms PDF link annotation
- http://zephyrhillfarmvt.com/uploads/1/3/1/4/131436978/7679440.pdfIn PDF document text
- http://mahoneybodywork.com/uploads/1/3/0/7/130775825/lojuwuxona.pdfIn PDF document text
- http://jakesweeneysweepers.com/uploads/1/3/0/6/130604090/690015f0a193c.pdfIn PDF document text
- http://schurova.info/uploads/1/3/0/9/130969143/xidas-jubukolirojikew-jofutubi.pdfIn PDF document text
- http://pufcorporation.com/uploads/1/3/0/7/130775674/1669435.pdfIn PDF document text
- http://the-healthy-nerd.com/uploads/1/3/1/4/131406710/pizawo-nivisad-zoxalipikinup-vemenuwav.pdfIn PDF document text
- http://abcnewsIn PDF document text
- https://twitterIn 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://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000103e5.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x103E5 | 9392 bytes |
SHA-256: ab9b5b428fb28cf4d989c43e1a9d1139c51df93e41a4942233c32ade3ac63999 |
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font_01_sfnt_off00012644.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12644 | 16232 bytes |
SHA-256: 9b8376160d22215e4a89009b03154fd154ede5185c406f004ad21bc2564739da |
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