MALICIOUS
242
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
The PDF contains multiple heuristics indicating malicious redirection and a social engineering lure for a browser extension or update. The document body, though heavily obfuscated, contains a URL that redirects to known malicious infrastructure, suggesting an attempt to download a second-stage payload or phish for credentials. The presence of embedded URLs and the ML classifier's high confidence further support this assessment.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 7
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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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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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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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/pify?keyword=low+back+pain+exercises+patient+handout+pdf In PDF document text
- http://vakoduma.micahmakespots.com/uploads/1/3/1/8/131857120/9cb72.pdfIn PDF document text
- http://files.cwwdelta.com/uploads/1/3/1/6/131637163/50e16528845f5.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://cdn.shopify.com/s/files/1/0434/0488/6166/files/33649310055.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0450/8450/8325/files/public_health_policy_formulation.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7015/2088/files/madotipewe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93527538138.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4393/7690/files/fumarulofuweragur.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/9562/1786/files/payroll_accounting_journal_entries.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5676/6882/files/rufulapogilomesujujot.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0668/0484/files/graves_guide_8._13.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5106/4228/files/67211733254.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:
dependabullbulldogs.com
4 samples
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006c44.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6C44 | 5396 bytes |
SHA-256: 937ddd95c868cf11b25450733fa252bae450a4a8cd156756f50049a476de7fda |
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font_01_sfnt_off00007ea1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7EA1 | 10456 bytes |
SHA-256: 02f5749d69d40ea2689459abb2aed01b108a0b5878963ca78c67875f79adc8a6 |
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font_02_sfnt_off0000a223.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA223 | 4324 bytes |
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3 |
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