MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious Link
The PDF file contains a large number of embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=atmosfera+estandar+internacional+pdf'. The document body, though heavily obfuscated, also contains this URL and numerous other Shopify-hosted PDF links, suggesting a link farm designed to attract traffic. No scripts were extracted from this sample.
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=atmosfera+estandar+internacional+pdf In PDF document text
- http://files.uofaasce.com/uploads/1/3/2/6/132682040/kogefojuzonera_dopituw.pdfIn PDF document text
- http://files.lamaisonneuve.com/uploads/1/3/0/8/130814208/89e0cb44.pdfIn PDF document text
- http://vidatefuf.bjeweledboutique.com/uploads/1/3/1/4/131438464/miperejesakeba.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/1/0440/1342/0702/files/45111299623.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/6091/9446/files/xamaxe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0448/2488/7456/files/clinical_nutrition.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7817/3343/files/56800567078.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5410/3713/files/86636239016.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/6275/3445/files/80060569714.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6694/9799/files/74614821861.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9078/9020/files/valores_normales_de_bilirrubina_en_sangre.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8857/6661/files/gunekoxigulubiwefiri.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3049/4882/files/3632167620.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/5249/1159/files/learning_guitar_book.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2122/1533/files/30721152378.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zofoxi.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_off00007265.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7265 | 5288 bytes |
SHA-256: 9a4134f61999442bfed72ba425bb1bd67f08afdfd16a57380a762364a16296bd |
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font_01_sfnt_off00008446.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8446 | 16184 bytes |
SHA-256: a5740ba74af0610ca317d26333106dc43393b76641ba67b2fc956e853ac08a09 |
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font_02_sfnt_off0000b564.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB564 | 16060 bytes |
SHA-256: ae97ebdbf5cb6679ee3ae7f6f8963da9ec2437ada1f672a33085bc8cbe806833 |
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