MALICIOUS
234
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains embedded links that point to a known malicious redirector, which in turn leads to a link farm of other PDFs. The document body text, though heavily obfuscated, contains the redirector URL and references to other PDF files, suggesting a phishing or scam attempt. The ML classifier strongly indicated maliciousness, and the presence of multiple PDF-specific heuristics related to malicious links reinforces this assessment.
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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LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMANDExtracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
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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=starview+hct-+5808 In PDF document text
- http://files.sttammanywoodworkersguild.com/uploads/1/3/1/4/131482884/8246696.pdfIn PDF document text
- http://files.dogfriendlyrentalsonsanibel.com/uploads/1/3/1/3/131398102/b4cc89.pdfIn PDF document text
- http://files.sailingkenutu.com/uploads/1/3/1/0/131070116/malunad.pdfIn PDF document text
- http://files.asteripursuit.com/uploads/1/3/1/3/131383330/nodisatasex.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/1/0433/0687/7080/files/25322908130.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/8527/4024/files/23606117755.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6016/5797/files/zazetamezuvuresuruzupe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/1532/3291/files/73555345070.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5381/6728/files/pifajap.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/1959/2103/files/16998331895.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0671/3253/files/pirutadujiserazi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2699/6633/files/40275306024.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/0791/6707/files/45085860973.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/3605/5454/files/curl_data-_urlencode.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8544/6824/files/59252164775.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0515/7282/files/hal_dll_bsod.pdfIn macro / runtime command snippet
- https://cdn.shopify.com/s/files/1/0432/4101/3412/files/soxaguzalerego.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/9350/7737/files/ruxofajiwuzeju.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
- https://cdn.shopify.com/s/files/1/0In macro / runtime command snippet
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000083a0.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x83A0 | 3896 bytes |
SHA-256: 2919ef569d44e00a8216357aeb9d57cf06bc4533d519ed871e0c288d6d0d4c21 |
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font_01_sfnt_off0000915c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x915C | 5424 bytes |
SHA-256: 2d3e47ce5bdc090359bfe9b5533a34bededf4d4c998700931d69ed44898c0f59 |
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font_02_sfnt_off0000a3e7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA3E7 | 15680 bytes |
SHA-256: 53e93015ad1bde546b1f62761d58a5af375858927566e633f59bf067cd265c6f |
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