MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF file contains numerous embedded links, with a critical heuristic firing indicating it's a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Romance of the condor heroes' and the wkhtmltopdf application, suggesting a lure. The primary malicious IOC is the redirector URL, which likely leads to further malicious content. The presence of many PDF links points to a link farm strategy.
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.com/pify?keyword=romance+of+the+condor+heroes In PDF document text
- http://files.schombergcommunityfarm.ca/uploads/1/3/1/3/131380868/c3c31a37f78ec7.pdfIn PDF document text
- http://files.wao-lb.com/uploads/1/3/1/1/131163959/wibakidixirifebones.pdfIn PDF document text
- http://files.ethanrmarshall.com/uploads/1/3/0/7/130739542/612a2e28644133.pdfIn PDF document text
- http://files.boutiqueofisanti.com/uploads/1/3/1/4/131407737/bolesotediwisi_sexupuru.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.opentle.orgIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6110/9155/files/88242996205.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6320/6307/files/kexenulagulagilekalun.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0743/5167/files/pitejozojinupenesezigenuk.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4525/6352/files/mujubetatejigig.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5161/4359/files/74086888336.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4781/3269/files/13648352282.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3902/2494/files/80939789795.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vakijuxek.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/4751/7341/files/4538024973.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3468/0216/files/xogajiwopez.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45927795399.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
- http://www.gnu.org/licenses/gpl.htmlIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000667e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x667E | 11328 bytes |
SHA-256: 0dc41bb161799d2d25d2af3b8d3cd3e8e2eddcc4d1841cf308cbdca3993832f1 |
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font_01_sfnt_off00008b8c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8B8C | 5236 bytes |
SHA-256: fe5d6dbe24470b0d1a30ef7478cbb672bb5d7092bcb4053474e659b59498e335 |
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font_02_sfnt_off00009d26.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9D26 | 8940 bytes |
SHA-256: f8051f7d017f59c3d2e5fcf1d1611c603ca8a17ec8e1cd98d980d02d947925ec |
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font_03_sfnt_off0000b67a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB67A | 13380 bytes |
SHA-256: ad71bd58878461ba3c7aa563e98821a4d227a7ee6d0b946756d233b40f2832bb |
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