MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a link farm designed to redirect users to external sites, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=jerarquia+de+operaciones+aritmeticas' and numerous other PDF links, suggesting a tactic to drive traffic to potentially malicious content. The heuristic firings confirm the presence of malicious redirector links and a link farm within the PDF structure.
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=jerarquia+de+operaciones+aritmeticas In PDF document text
- http://files.avsone.com/uploads/1/3/0/9/130969472/bodurizoberanog-modomebik-difamajosenef.pdfIn PDF document text
- http://zebeziba.prettylittlebath.co.uk/uploads/1/3/1/4/131454106/zeritugorebiza.pdfIn PDF document text
- http://minitike.cancercoloring.com/uploads/1/3/2/6/132683001/kajex_botulakosivola.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/1/0433/3685/9813/files/21126705344.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0441/2358/6712/files/android_smartphone_secret_codes.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62654677968.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5652/1631/files/30419374960.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3167/4535/files/bedizalivoj.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5175/3380/files/lucida_blackletter_font_free.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/5064/6169/files/good_charlotte_good_morning_revival.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8976/4245/files/bass_guitar_chords_file.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5661/0979/files/6443521645.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/4371/7274/files/bapisobozupigokiw.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
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005f3e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5F3E | 5304 bytes |
SHA-256: a62885b9fdf39c8436bcc76cf836b4ed9ca89db4385d1708b90c5c086fec5610 |
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font_01_sfnt_off00007126.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7126 | 14664 bytes |
SHA-256: 27ceaef4956716aabc4a71890dddedf57872fbde45cf98d8d4ccfdfbae9ffff2 |
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font_02_sfnt_off00009ee6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x9EE6 | 16080 bytes |
SHA-256: 19cc87a61af1ffec9583344a7275f6d3812bd596e08e219237328c0503819c41 |
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