MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains embedded links, with one pointing to a known malicious redirector at 'https://ttraff.ru/pify?keyword=comprension+lectora+dibujos'. The document body, though heavily obfuscated, also contains this URL and numerous other links to PDF files hosted on Shopify and other domains, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful 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=comprension+lectora+dibujos In PDF document text
- http://xigixufaw.ana-ramirez.com/uploads/1/3/1/3/131383373/buwezi_bujuk.pdfIn PDF document text
- http://files.veilofyork.co.uk/uploads/1/3/1/1/131163846/pajelananow_vigizerir_tawufitimiwa.pdfIn PDF document text
- http://lovul.lotusranch-homes.com/uploads/1/3/1/4/131454215/savupuvesun-jorunazan-muwamanija.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/1/0434/3300/1126/files/46002285839.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/9431/7981/files/area_of_circles_sectors_and_segments_worksheets.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/4012/0733/files/tiseganewidajepav.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/7936/7845/files/89420803107.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/2511/0952/files/cfmeu_wage_sheets.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0453/9875/3448/files/at_the_beginning_piano_sheet_music_free.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0233/9232/files/65128360795.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/0513/2456/files/26462007559.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/8955/1770/files/39158157159.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/2269/6098/files/28634985443.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/5943/0054/files/19874636851.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/8544/7833/files/erie_county_water_authority_report_problem.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/4983/4901/files/tobakipipajutito.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005f1e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5F1E | 5340 bytes |
SHA-256: fb36b401bd6d44c2ff33147f324af1f4842dd56b55758be315b166acd70b4b3a |
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font_01_sfnt_off00007113.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7113 | 4624 bytes |
SHA-256: 61ccb5a04332903f5f59a3116addffa22d45dad8b5b4bce34f55b280cf38a974 |
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font_02_sfnt_off00007db2.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7DB2 | 10516 bytes |
SHA-256: f533f037cc2e4124a9bc5294e5cdbab2c6a5f5642ba307b74824fd1b2c74948b |
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font_03_sfnt_off0000a139.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xA139 | 16036 bytes |
SHA-256: 354dce64f07f3d7acdf6a04edf763950ffbfec4edcbb4bfe17b65a83544077bb |
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