MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links directs to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and references 'maths quadratic equations pdf', suggesting a lure to disguise malicious activity. The ML classifier also strongly indicated maliciousness.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
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=maths+quadratic+equations+pdf In PDF document text
- http://files.photocolorongraphics.org/uploads/1/3/1/6/131606807/zodulekavemojewi.pdfIn PDF document text
- http://files.beyourbe.com/uploads/1/3/1/6/131607522/5829055.pdfIn PDF document text
- http://files.newseasonwc.com/uploads/1/3/1/0/131071157/3821101.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/1/0432/8289/0912/files/javascript_array_remove_duplicates.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/8435/6507/files/1421746083.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3346/8839/files/gatodefemozugeva.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/4533/9814/files/88829805176.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4410/1544/files/90654522885.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/0505/1029/files/38447067405.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3003/6123/files/basic_algebraic_formulas.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/9505/5777/files/duzegurodaxezakojilav.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6109/2245/files/wonajo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/1820/7911/files/leer_in_the_preterite.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/5698/8311/files/gononepekumikuruvusin.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5889/6802/files/17842610988.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
🗂 Part of campaign:
photocolorongraphics.org
6 samples
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c71b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC71B | 5340 bytes |
SHA-256: ff5b055966c259348f1cbaa28134b60df9379313edd7514c3bc8a41ee5b22f87 |
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font_01_sfnt_off0000d94c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD94C | 17276 bytes |
SHA-256: fcbb2bd55ffc4255a6422c7aaf37afc7f84f793b171f662f594ba9f00dd96d63 |
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font_02_sfnt_off00010f51.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F51 | 16156 bytes |
SHA-256: 379d44e8c2f250d662a0e9b59e9e45fd1baad7f6efae186e6c8c0f0726464a7d |
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