Malicious PDF — malware analysis report

Static analysis result for SHA-256 15c6c8f99d358995…

MALICIOUS

PDF

45.9 KB Created: 2020-08-09 20:45:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 78620a37475a41a858ef1509dcd9e14d SHA-1: 2a24ed9b85267f43e8806f1f6e54af6d232bb384 SHA-256: 15c6c8f99d3589956bdefae6612c94ec246876a7abb97782ad08225ec1ff512b
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.com) known for malicious activity. The document body and heuristics indicate a link farm designed to lure users with terms like 'advanced synonyms worksheets pdf'. While no scripts were directly extracted, the presence of malicious redirector links strongly suggests an intent to deliver a secondary payload or phish for credentials.

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.com/pify?keyword=advanced+synonyms+worksheets+pdf In PDF document text
    • http://files.kmmauthor.com/uploads/1/3/2/6/132682787/ba53bc803d05.pdfIn PDF document text
    • http://files.kortisranchwhitetailhunting.com/uploads/1/3/1/8/131871740/e8cbd34e7ccb37.pdfIn PDF document text
    • http://kujamag.jamiekincaid.com/uploads/1/3/1/6/131606289/9159061.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7744/9366/files/php_console_log.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9569/5267/files/julaxewufizuworimanunufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7701/8524/files/29317923908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8318/5819/files/category_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2499/8819/files/13950338349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7162/5621/files/animation_character_design_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3158/5180/files/73665072360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1547/8176/files/94006231630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nemopijudesukofareran.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9275/5111/files/vavowoxadenasekuxirimutof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1771/5361/files/zojipek.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 5

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_off00006637.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6637 5412 bytes
SHA-256: 4916300e9f2d9e4a41d5eb6c18365ff9b60c398cca953a6a672d08f5cade7d26
font_01_sfnt_off00007885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7885 10540 bytes
SHA-256: 3f3cd2611f27146cc1f33efcb76076fab379fe38e08f03f2141b79f9250796e6
font_02_sfnt_off00009c7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C7E 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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