MALICIOUS
96
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous external links, many pointing to similarly structured URLs on different domains, indicative of a link farm or SEO manipulation tactic. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains references to 'Counterweight guide shoes' and the wkhtmltopdf application, suggesting a potential lure or disguise for the malicious linking activity.
Machine Learning
- Nyx PDF Classifier malicious score 0.9958
Heuristics 4
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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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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://easyfreelegal.com/uploads/1/3/0/5/130590589/130590589.html#counterweight+guide+shoes PDF link annotation
- http://show2web.com/uploads/1/3/1/4/131438316/c59ed3f804b.pdfIn PDF document text
- http://jmaisd.org/uploads/1/3/0/8/130813428/8065438.pdfIn PDF document text
- http://step11workshops.com/uploads/1/3/0/5/130551558/niwuxa_kipifuvizaje_gadakufawalotot_lariri.pdfIn PDF document text
- http://athl33t.org/uploads/1/3/0/7/130740393/f51440e3a1.pdfIn PDF document text
- http://russellchapelontheolivegrove.com/uploads/1/3/1/4/131455416/fenenujokox_lopof.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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
- https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text
- http://www.adobe.com/).NotoIn PDF document text
- http://www.google.com/get/noto/http://www.adobe.com/type/ThisIn PDF document text
- http://scripts.sil.org/OFLNotoIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005d66.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5D66 | 8388 bytes |
SHA-256: 0dd1de3dc07e3918b33ce0d0e73474a6454c0152119f65753170302e88032933 |
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font_01_sfnt_off00007de1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7DE1 | 2652 bytes |
SHA-256: e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea |
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font_02_sfnt_off0000871f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x871F | 4184 bytes |
SHA-256: eaa4dde51fd04d4db8dc223d97e5e1aeb2070941b7c144db1acc557f645d9ab7 |
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