MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
T1203 Exploitation for Client Execution
The PDF contains a malicious redirector link that masquerades as a 'free download' or 'add-in' lure, aiming to trick users into installing malicious software or divulging credentials. The ML classifier strongly indicates maliciousness, and the presence of SEO-optimized links suggests an attempt to broaden the attack's reach. The document body, though heavily obfuscated, contains the malicious URL.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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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.ru/pify?keyword=add+in+word+2020+pdf In PDF document text
- http://files.southcarolinapac.org/uploads/1/3/1/3/131380001/nifif.pdfIn PDF document text
- http://files.riptworkshops.com/uploads/1/3/1/3/131383283/vakono_nezujiweb_vuwasubakoso.pdfIn PDF document text
- http://files.touringindustries.com/uploads/1/3/1/4/131406086/ranabole_xasulapexip.pdfIn PDF document text
- http://files.russmillssigns.com/uploads/1/3/2/6/132696154/wexeduladifawetejaf.pdfIn PDF document text
- http://files.magnifiscentsoap.com/uploads/1/3/0/7/130740458/befa6d61.pdfIn 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/1/0433/0084/7781/files/28191029500.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3276/3801/files/95203430750.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/0599/3375/files/sazamobapexabudurabokod.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5290/0250/files/7820359945.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4191/5042/files/wheels_foo_fighters.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/7437/9157/files/zukudajosim.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6454/0840/files/74687640701.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7973/8278/files/34692633915.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6305/0394/files/makalah_alkalinitas.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5305/5128/files/convert_file_to_word_document_free_download.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9350/8771/files/70885605431.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6333/6350/files/tidixeseperivakut.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/7355/1001/files/nekivifuxewoko.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/8435/6507/files/53298829756.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3414/0072/files/gotolexexidibalekagekopok.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_off00008156.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8156 | 4968 bytes |
SHA-256: 54d02f44a4f973bc5c0e49d22e6307be85b15cee3af1f8d160e048c9eb47b0e2 |
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font_01_sfnt_off00009266.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9266 | 10268 bytes |
SHA-256: f0769111154a48a26613f48e66b1acaedb7e2dbf30cdd438248be8fe07fbe583 |
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