Malicious PDF — malware analysis report

Static analysis result for SHA-256 eacd20725fdf7e7a…

MALICIOUS

PDF

44.6 KB Created: 2020-08-26 16:48:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3dc54ad7cc99c58bcc69ba591b946ee1 SHA-1: 112e7a13c03f6cabc1ab9cc3b76e2f46cab3681c SHA-256: eacd20725fdf7e7ab3d01a68c0496035f2e450143dd038f8775491fb2fe497a8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a link farm hosted on ttraff.ru. This heuristic indicates a malicious redirector designed to funnel users to potentially harmful content. The document body, though heavily obfuscated, contains the same suspicious URL, reinforcing the malicious intent. The presence of numerous external links suggests a link farm or SEO poisoning tactic to distribute malicious content.

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.ru/pify?keyword=linear+inequalities+word+problems+wo In PDF document text
    • http://nadugalav.thevideogamecollector.com/uploads/1/3/1/4/131483334/dativuka.pdfIn PDF document text
    • http://newatowev.pft-alexandernews.com/uploads/1/3/1/8/131856809/fuzaxuzo.pdfIn PDF document text
    • http://doxowat.valleyviewpuppies.org/uploads/1/3/0/7/130775320/pujibikenoboli-novuri-kefexi.pdfIn PDF document text
    • http://files.myanalogworld.com/uploads/1/3/2/7/132710632/kuzus_wazilinepubur_polixa.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/1/0427/9199/3500/files/50084414452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3770/4867/files/14735136053.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2118/8763/files/the_pathways_to_peace_anger_management_workbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1993/4628/files/lefatidotukogab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32878299647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/48177964882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2340/8032/files/53021657403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/meragavafeduxilaxopuxaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5479/2866/files/23676238405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/7372/4576/files/assassin_creed_identity_game_for_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/lutatonerefodudimikajupod.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A59 5404 bytes
SHA-256: bf1d54cf08791ae7ec0581ad8c89f0cd38f0a575a27a846b218c089510a4fa30
font_01_sfnt_off00006caa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAA 10388 bytes
SHA-256: c95532308d0bd3347ed6102366122c2e00bb4471326ba787df8091bc8cb2721b
font_02_sfnt_off00009071.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9071 16088 bytes
SHA-256: ccd0ea095085b9379100d4de0d13d045157d8501f46cd3db2ef5c00475687e02