Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eebf94cd71f5841…

MALICIOUS

PDF

70.0 KB Created: 2020-08-15 02:29:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 27126ab3982eff9e79537991f837c4b8 SHA-1: 9c4164245b6b986fda7fe22abb8ea9b949e68b52 SHA-256: 6eebf94cd71f584165c6413da294aa54ea2218ced81c503d64f9516c13fa2f58
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple heuristics indicating malicious redirection and a link farm, with a prominent link to a redirector URL. The document body, though heavily obfuscated, contains the same redirector URL and several benign-looking PDF links, likely part of a SEO spam or phishing campaign. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=transformers+botbots+series+2+codes In PDF document text
    • http://files.cwamyouthleague.org/uploads/1/3/0/8/130873902/9dc81a65e73.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/1/0433/8837/1107/files/42378835145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8632/2593/files/dukowusogoro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9183/6572/files/buken.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7372/3800/files/46440822950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8909/3018/files/wukibavom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8384/2215/files/16377401581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0384/4520/files/oxford_learner_s_thesaurus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2174/3781/files/bhartiya_sanskriti_gyan_pariksha_question_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1218/5499/files/video_er_apk_for_jio_phone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8770/7804/files/53637642869.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7199/5033/files/98022211933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2839/7727/files/xesowitubapokoxiwixu.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b4fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4FD 5156 bytes
SHA-256: 20971e0e89422a8ee45731afa309b9d5eef92a0bbe796218344729afa4d7dfcc
font_01_sfnt_off0000c6da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6DA 5356 bytes
SHA-256: 4c23afdb7206740db2f8eeefee15031aa02421933b7d3b32fdfb093ceb0e7369
font_02_sfnt_off0000d8f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F0 16552 bytes
SHA-256: d9974081a14807f322e4876ca7dadf388ace6af72a94fad6326a4f88e927b9e0

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