MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
T1204.002 Malicious Link
The PDF file contains embedded links, with one specifically pointing to a known malicious redirector at 'https://ttraff.ru/pify?keyword=steiner+waldorf+curriculum+pdf'. The document body, though heavily obfuscated, contains keywords related to the URL, suggesting a lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy, likely to improve SEO for malicious content or to obscure the final destination. The file was authored using wkhtmltopdf, a tool sometimes abused for generating malicious PDFs.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
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.ru/pify?keyword=steiner+waldorf+curriculum+pdf In PDF document text
- http://files.wormfoodforthough.net/uploads/1/3/0/9/130969243/e9c22e71c4f8.pdfIn PDF document text
- http://files.pirhozeta1920.com/uploads/1/3/1/3/131398385/tilosawa-dugutam-mogiwowipo-mekatogeduj.pdfIn PDF document text
- http://files.childsupportreformnow.com/uploads/1/3/0/7/130775350/wegulugepidije_pilavinamugeja_bezimubosinakoj.pdfIn PDF document text
- http://files.hypnosisworkz-sp.com/uploads/1/3/1/8/131856065/7724757.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/1/0431/4375/7985/files/jugezidapanemuzeninodibur.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7079/9510/files/lopisixidominiwapozex.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8841/2836/files/50166301174.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/3430/3912/files/vesafelulanisus.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6560/6301/files/vakixuzogaxosiwu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/3784/1813/files/zamovajefipesawivi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/9621/0594/files/big_blue_bus_8.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7643/5621/files/22530871449.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0876/1764/files/megit.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4248/7963/files/88939130089.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7230/6846/files/11060141110.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off000178cf.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x178CF | 9256 bytes |
SHA-256: 7ff79db78169098a4ffa33a2d4bfd02ef7c52798b48798c39bb8a3a30daa1185 |
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font_01_sfnt_off0001978c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1978C | 5200 bytes |
SHA-256: 5591d93511fad41133ca0d6f1bd85f506fed5abbd8c19601874266eeb4975875 |
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font_02_sfnt_off0001a92b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1A92B | 10420 bytes |
SHA-256: 3430cefcd06902fdd30400c6adca5ec82f6bfc640208d1a5cf5f69e7a32a03f0 |
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font_03_sfnt_off0001ccc2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1CCC2 | 4324 bytes |
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3 |
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