Malicious PDF — malware analysis report

Static analysis result for SHA-256 c89f94bcde40a532…

MALICIOUS

PDF

43.9 KB Created: 2020-08-22 15:24:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 870dcab9dc517a51af3170bab8ddcf59 SHA-1: 9ee83de6d910d5c1c7ad53c7bbf2045c95ddeebc SHA-256: c89f94bcde40a532b44eb14bd78b554a12ab3feed2332e5f008f7da0f8b54e42
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=adobe+animate+cc+free+trial'. This URL is presented within the document body, disguised as a link for a free trial of Adobe Animate CC. The PDF also exhibits characteristics of a link farm, suggesting a broader campaign to distribute malicious content. No scripts were extracted, and the document body is heavily obfuscated, but the primary malicious intent is clear from the redirector URL.

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=adobe+animate+cc+free+trial In PDF document text
    • http://files.safechildcoalition.net/uploads/1/3/0/9/130969305/5496288.pdfIn PDF document text
    • http://tibarozug.multilanguagebox.com/uploads/1/3/2/6/132682663/1890954.pdfIn PDF document text
    • http://files.brandgenius.com/uploads/1/3/1/4/131482886/puvevaw_mijoruruzenapi.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/1/0439/4372/3163/files/34864736827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1538/7811/files/74946898305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3084/6363/files/python_unit_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mekokagowofulagifofid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6049/4485/files/javascript_functional_programming_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2225/3205/files/ielts_discussion_questions_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0086/2619/files/sizevapowan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6674/4216/files/27022676264.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4464/2715/files/28116316113.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 4

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD3 5120 bytes
SHA-256: 834fab951ad160585969088048e99267498091e77f4e6809ceeb784b3504fbdb
font_01_sfnt_off00007f26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F26 10360 bytes
SHA-256: d105ee2185524b2b7e150f3ac3eb20791916dd6d9e2bc295db3c84fa16b761c7

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