MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.001 Malicious Link
T1059.001 PowerShell
The PDF file contains a large number of embedded links, many of which point to suspicious domains. One critical heuristic firing indicates a malicious redirector link, and another identifies a PDF link farm. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/wb?keyword=sulfasalazyna%20reumatologia%20pdf', suggesting a lure related to medical information. The primary intent appears to be directing users to malicious or potentially unwanted websites.
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.cc/wb?keyword=sulfasalazyna%20reumatologia%20pdf In PDF document text
- http://files.ubaehawaii.com/uploads/1/3/2/6/132696263/b88cba336e391ec.pdfIn PDF document text
- http://files.tacosmog.com/uploads/1/3/0/7/130739375/zebawibosabadowewat.pdfIn PDF document text
- http://files.rsvpvolunteercaregivers.org/uploads/1/3/2/6/132681824/navate.pdfIn PDF document text
- http://files.sproutsmyanmar.com/uploads/1/3/2/3/132302863/giburapudiga-dojowul.pdfIn PDF document text
- http://files.thermotrix.com/uploads/1/3/1/4/131407734/12612e9.pdfIn PDF document text
- http://files.uspaeast.com/uploads/1/3/0/8/130873895/05756bc14bb29c0.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://gifedejati.files.wordpress.com/2020/06/77985180136.pdfIn PDF document text
- https://jurikebigox883042776.files.wordpress.com/2020/06/kuwibuwozafede.pdfIn PDF document text
- https://wazipugakor.files.wordpress.com/2020/06/78773402311.pdfIn PDF document text
- https://pofajopefu.files.wordpress.com/2020/07/19763795817.pdfIn PDF document text
- https://wujixose.files.wordpress.com/2020/06/rokefuj.pdfIn PDF document text
- https://datugonirir.files.wordpress.com/2020/06/70266166771.pdfIn PDF document text
- https://dojuzemis.files.wordpress.com/2020/06/86553152166.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nitopufekuriwuk.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/77363931764.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76957488457.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fezusagofetivori.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75904593322.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nojigepinipefonumupitos.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75901524911.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_off00008fab.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8FAB | 5500 bytes |
SHA-256: 75140588ae495233e9491e4f053253feb7579219ac83403c1472ab467fd5a06b |
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font_01_sfnt_off0000a24e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA24E | 11292 bytes |
SHA-256: d6a9b21b9c12e4533089d079ad81ade78570e0b318e8f506ef3bfb74f9d68607 |
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