MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains numerous embedded links, including one identified as a malicious redirector. The document body text, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=braille+scale+modelling+pdf', which is also flagged as a malicious redirector. The presence of a 'download button' heuristic further supports the lure mechanism. The file likely serves as a delivery mechanism for further malicious content via the redirector.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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=braille+scale+modelling+pdf In PDF document text
- http://files.morningrosehouston.com/uploads/1/3/1/4/131408913/wevije.pdfIn PDF document text
- http://files.cantonguitarsociety.org/uploads/1/3/0/7/130740493/faee2a7f.pdfIn PDF document text
- http://files.stewardsfortomorrow.org/uploads/1/3/2/6/132683330/9a615c8.pdfIn PDF document text
- http://files.judithavers.com/uploads/1/3/1/8/131856112/8387156.pdfIn PDF document text
- http://files.hollyboyter.com/uploads/1/3/0/7/130775071/sevagibisuvijoxesu.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/1/0435/4929/4756/files/essentials_of_biology_3rd_edition_mader.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0315/8433/files/92875364736.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1754/3588/files/22513511833.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0449/7158/9800/files/anand_srinivasan_books.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/8772/4704/files/greatest_albums_of_all_time.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/0873/5907/files/calculus_on_manifolds_spivak.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7441/0910/files/70982419391.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7301/0845/files/belezin.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tefukina.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7699/3695/files/15099384127.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/4396/3548/files/17781834648.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/3239/6447/files/tactics_for_toeic_listening_and_reading_test_free.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_off00008f43.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x8F43 | 5524 bytes |
SHA-256: 4e4517e842060cd7722772b0f6be739641bdb947fb6101598d082c847d9472f1 |
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font_01_sfnt_off0000a1f6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA1F6 | 10132 bytes |
SHA-256: 67d5bd27a7ff76990f821fe48a2b143b2955525646d9cd0b0c8aaa75a8c7a65b |
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