MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF document contains a large number of embedded URLs, many of which point to disposable domains and are likely part of a link farm designed to manipulate search engine rankings or redirect users to malicious sites. The ML classifier strongly flagged this PDF as malicious, and the presence of a redirector link further supports malicious intent. Although no scripts were explicitly extracted, the structure and URL distribution suggest a campaign focused on SEO spam and potentially phishing or malware distribution.
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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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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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/wb?keyword=como%20unir%20varios%20archivos%20pdf%20en%20uno%20solo%20youtube In PDF document text
- http://files.meridianbodycare.com/uploads/1/3/1/8/131857193/6976761.pdfIn PDF document text
- http://files.rapidballroom.com/uploads/1/3/2/7/132710690/18f3e10fe.pdfIn PDF document text
- http://files.truvisioncolombia.com/uploads/1/3/1/3/131383959/peretefo_zijudaxisen_vaburerijej.pdfIn PDF document text
- http://files.next-level-impression.com/uploads/1/3/1/4/131408364/2401374.pdfIn PDF document text
- http://files.birdcrazyresort.com/uploads/1/3/2/7/132740501/3e660c.pdfIn PDF document text
- http://files.connectivityusa.net/uploads/1/3/1/6/131606454/8656316.pdfIn PDF document text
- http://files.katiemachain.com/uploads/1/3/1/4/131455283/57a787ca629.pdfIn PDF document text
- http://files.yourmagicaldestinations.com/uploads/1/3/1/3/131384250/xabejatimunizukoxu.pdfIn PDF document text
- http://files.ckgwords.com/uploads/1/3/1/1/131164095/tanufuxoso.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://vimenemuzez.files.wordpress.com/2020/07/datom.pdfIn PDF document text
- https://povodijagez.files.wordpress.com/2020/06/5148312207.pdfIn PDF document text
- https://pojupemi.files.wordpress.com/2020/07/98232841145.pdfIn PDF document text
- https://laderafi767971175.files.wordpress.com/2020/06/raliwofusugip.pdfIn PDF document text
- https://jogufufi610947214.files.wordpress.com/2020/07/38333684553.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69696378660.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nemevisofopanufu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zebegevuda.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41078692832.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/6219719719.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://savannah.gnu.org/projects/freefont/In PDF document text
- http://www.gnu.org/licenses/In PDF document text
- http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
- 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_off00004bac.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4BAC | 6744 bytes |
SHA-256: 048fb1891f432488516cd811e7b04d68e7d39e548ca3495625137f8fb0c23ff4 |
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font_01_sfnt_off00005c91.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5C91 | 5604 bytes |
SHA-256: c9c0bd4b19bfc83a16156a461997bf4f1ff9d530c1e6e77f7c80d97f94577533 |
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font_02_sfnt_off00006f7a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6F7A | 11168 bytes |
SHA-256: f494ae0dee7df5e62af050c58f611045643333aa9e4e6c285952ae5025acf015 |
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