MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, contains text that appears to be a lure related to a medical condition, combined with references to PDF and wkhtmltopdf, suggesting it's designed to appear as a legitimate document. The presence of many external PDF links, some benign and some unknown, indicates a link farm or SEO manipulation tactic to distribute malicious content.
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=tratamiento+absceso+bartolino+pdf In PDF document text
- http://files.murpthart.com/uploads/1/3/1/8/131857847/lebinuda.pdfIn PDF document text
- http://files.fundamentalnews.com/uploads/1/3/0/9/130969592/7194379.pdfIn PDF document text
- http://files.cedardifference.com/uploads/1/3/1/3/131380440/pufozumunegokufaxel.pdfIn PDF document text
- http://files.thevoicelabinc.com/uploads/1/3/2/6/132695829/vavixetazukin.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/1/0437/3492/5463/files/zuwifefedupuzepisidiwar.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/0537/7688/files/mugodumaxitiruta.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/0273/9362/files/kodowu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/3319/7718/files/54906534185.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/2023/7475/files/tomorufarolu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7939/1646/files/autometrica_pdf_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53551688275.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0631/2098/files/tumblr_themes_max_davis.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/4166/7734/files/13175982673.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/2426/1026/files/guxosofoxedugoz.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97285982277.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7194/7430/files/10169948234.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/6031/3763/files/poziwalarezelejose.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8712/5927/files/juvebewejijikamegamevo.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_off00007130.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7130 | 5392 bytes |
SHA-256: a84b66ccccce57477d2be48fcab081aba9d4e568fd98c4d0463a5713eb221586 |
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font_01_sfnt_off00008364.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8364 | 13084 bytes |
SHA-256: 8d28aaf30be09e39bcc32dfe45154884babcd7f22006fbcfe5ae6e8057d20a17 |
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