Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9bf5d254ff9456c…

MALICIOUS

PDF

58.6 KB Created: 2020-08-09 19:26:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 489f4d3d284e066ca8415892dd9dfab2 SHA-1: 6ca07a3a91b58cb323ad1f222b825f811d4ce28e SHA-256: e9bf5d254ff9456ce88d1de4e92cc75244307892a7495baf3cd7f297baac7405
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a document about "numeros en ingles y pronunciacion pdf". The heuristic firings indicate that this PDF is part of a link farm designed to redirect users to malicious infrastructure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=numeros+en+ingles+y+pronunciacion+pdf.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The 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.
  • Embedded URL info EMBEDDED_URL
    One 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/pify?keyword=numeros+en+ingles+y+pronunciacion+pdf In PDF document text
    • http://nifopez.dharma-yachts.com/uploads/1/3/0/8/130814788/kigifusukorarakufu.pdfIn PDF document text
    • http://files.janson-fit.com/uploads/1/3/2/6/132681690/b9f7059641.pdfIn PDF document text
    • http://files.chenowethbairddesign.com/uploads/1/3/1/8/131871894/kawal_fudomur.pdfIn PDF document text
    • http://files.rrhsartclub.com/uploads/1/3/2/7/132740423/badekokidujura.pdfIn PDF document text
    • http://files.mercy-reigns.com/uploads/1/3/0/8/130814078/vupitan_fozaxazan_jopimonukuzene_relezasow.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/1/0431/6423/7992/files/38185626064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8709/4177/files/differential_and_integral_calculus_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/4513/0133/files/modern_agriculture_technology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4935/2349/files/90169573310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0102/7493/files/gisavorovexaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6553/9741/files/arabic_numerals_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/lefaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1610/1793/files/materi_aritmatika_sosial_kelas_7_kurikulum_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4224/9631/files/33321536468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9302/4151/files/ditivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4675/6774/files/filipanifobeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/62348103333.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5189/1358/files/certified_associate_in_project_management_book.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.

FilenameKindSourceSize
font_00_sfnt_off000077cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77CD 5544 bytes
SHA-256: a10e512eeaf1d2f69a8a2f4693da7ccebb326267db32cf7ba21560166df6f290
font_01_sfnt_off00008aa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AA0 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off0000932e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x932E 16280 bytes
SHA-256: ce5e79313133d16bee0fdb6a02afd1eeee6ca3f27137732881e482eb62d8e983
font_03_sfnt_off0000c512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC512 16312 bytes
SHA-256: bf8f9ece8d9d74ce2d7a98a07ee1bb8f4056faf702b3b1702118181e85f1b939