MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains multiple heuristics indicating it's a malicious redirector, specifically designed to lead users to external SEO-optimized links. The primary redirector URL, 'https://ttraff.com/pify?keyword=contabilidade+debito+e+credito+exercicios+resolvidos+pdf', is flagged as malicious. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create documents for SEO manipulation or malicious purposes. The presence of numerous links, including one to a Shopify domain, further supports the SEO link farm and redirector attack pattern.
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.com/pify?keyword=contabilidade+debito+e+credito+exercicios+resolvidos+pdf In PDF document text
- http://files.equisportphoto.com/uploads/1/3/1/6/131607662/javeponedeve-lukavadi-jizilez-tapom.pdfIn PDF document text
- http://files.allcaptainsmobilemarine.com/uploads/1/3/2/3/132302916/4334583.pdfIn PDF document text
- http://files.aaronhunttheatre.com/uploads/1/3/0/9/130969191/99a91951ea3d.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/1/0436/3298/4222/files/pojeporokirejex.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/8924/7894/files/7007620849.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8139/1514/files/98290178049.pdfIn PDF document text
- https://zafudax.files.wordpress.com/2020/07/zemeluk.pdfIn PDF document text
- https://fobitogoxonu.files.wordpress.com/2020/06/rasotepize.pdfIn PDF document text
- https://zabukutevil.files.wordpress.com/2020/06/12023155486.pdfIn PDF document text
- https://woxujobeza.files.wordpress.com/2020/06/15461589999.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/7786/8443/files/nudisamemaxo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0465/6790/files/16654269862.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/4121/0011/files/14990138099.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3426/4231/files/49443971347.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7474/7545/files/17108065799.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6953/7432/files/wemak.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0071/6694/files/73863207972.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_off00007cdd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7CDD | 5228 bytes |
SHA-256: 093ba91436c9c8ce21fbd634d32980cfe1732e8cd85ee8436e30b0c32a459b4c |
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font_01_sfnt_off00008eae.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8EAE | 13480 bytes |
SHA-256: 172a8e9e6dd3d395c0db0d74cff1b889540d276bc1f740b2ced7735b4e63eb1a |
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