Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1ac1992ba435b50…

MALICIOUS

PDF

51.1 KB Created: 2020-08-21 10:17:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6be64c09ec366535ce0084172dbcd55f SHA-1: 6202e668da03697d9d83fdf68907ef12444a71cf SHA-256: c1ac1992ba435b5004f597510d94bfc7d53c466bfa3d3fa8fd453b1b0cbd274d
202 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to 'https://ttraff.ru/pify?keyword=axure+rp+9+license+key+free', which is a strong indicator of a phishing or malware distribution attempt. The document also exhibits characteristics of a link farm, with numerous embedded URLs, including one leading to 'https://cdn.shopify.com/s/files/1/0438/2133/4688/files/mazetawixezepogopuro.pdf'. The presence of a 'download button' heuristic further supports the lure of downloading potentially malicious content.

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=axure+rp+9+license+key+free In PDF document text
    • http://files.holisticimpactfoundation.org/uploads/1/3/0/7/130739480/tolosidimamirol.pdfIn PDF document text
    • http://zekize.natpaton.com/uploads/1/3/1/8/131856570/rumebugege.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/1/0438/2133/4688/files/mazetawixezepogopuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4292/0865/files/kindle_cloud_reader_chrome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6200/9760/files/amit_goswami_livros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5526/8519/files/pdf_writer_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6784/2459/files/46646787969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7256/0031/files/divorce_in_islam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1540/4695/files/sabenozixanezubep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8336/5528/files/airliner_world_november_2020.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
🗂 Part of campaign: holisticimpactfoundation.org 5 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008167.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8167 5180 bytes
SHA-256: 9735d4624a01d016d0c2d9e279a53d9a36573ea94854374337d6dc64e605221b
font_01_sfnt_off00009325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9325 14196 bytes
SHA-256: 3d06b3007d78cc075bc79d223bcbb01c8cf3007cad9979daafccfb948ed09af7