MALICIOUS
254
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
T1059.001 PowerShell
The PDF file contains multiple heuristics indicating malicious intent, including a critical finding of a PDF redirector link to a known malicious domain and a PDF link farm. The document body, though heavily obfuscated, contains text referencing 'video er free for google chrome' and includes the malicious redirector URL. The presence of a browser extension installation lure and a callback phishing lure further supports a social engineering attack. The primary attack vector appears to be directing users to a malicious URL under the guise of free content.
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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
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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.link/wix?keyword=video+er+free++for+google+chrome In PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekosipavejidowusa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5747/8809/files/dukonaxu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0450/2441/1806/files/formulating_adhesives_and_sealants.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8844/5604/files/puparijobamepef.pdfIn PDF document text
- https://static.usrfiles.com/ugd/4117a9_4f170738d8d34145a355707a7d14024c.pdfIn PDF document text
- https://static.usrfiles.com/ugd/aff7ca_eec8f45eb37243c0a8c92d1d1749bcaf.pdfIn PDF document text
- https://static.usrfiles.com/ugd/b8c837_2b1bded44bc649df9930a58778dcf501.pdfIn PDF document text
- https://static.usrfiles.com/ugd/625844_a1b06a6ce9db4e2aaf27c7a040e3770c.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7321/6411/files/tamutedizoj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/59577082877.pdfIn PDF document text
- https://static.usrfiles.com/ugd/de02f3_f3d7fbc3424142fdbca6388572fbbdd6.pdfIn PDF document text
- https://static.usrfiles.com/ugd/0adedf_8c48646aaec44013b5f10c6f0d129a60.pdfIn PDF document text
- https://static.usrfiles.com/ugd/43d598_dea6057ad23a426683ab0b2c73719d19.pdfIn PDF document text
- https://static.usrfiles.com/ugd/f0e51d_5b432d10af004a399af4da614a3d2146.pdfIn PDF document text
- https://static.usrfiles.com/ugd/f0e51d_6826f1a8e8d14db69ba8dad0c39b45de.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
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006035.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6035 | 5012 bytes |
SHA-256: 3c19f774deaec531d8231c97a76ba22f37a21c5531416f25c1f5658f0feb94e7 |
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font_01_sfnt_off00007120.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7120 | 10352 bytes |
SHA-256: 543c25a5b40769e4b2b4c96fad8ea6c9cc6ca85c0ade08720bade056d521df21 |
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