Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1bdceb6d04613ed…

MALICIOUS

PDF

40.3 KB Created: 2020-08-14 01:44:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 934afc0112acb4f04932257bf0d80c2f SHA-1: d083c6cf7ebdfe613759276d5f169be515106852 SHA-256: f1bdceb6d04613ed6fed66859ff5dd1540d3eb4e6dad58118d48944205caa380
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm designed to redirect users. One of the primary links, 'https://ttraff.cc/pify?keyword=boris+fx+graffiti', points to a known malicious redirector. The document body, though heavily obfuscated, also contains this URL and numerous other PDF links hosted on various domains, suggesting a broad distribution or redirection strategy. The presence of these link farms and redirectors strongly indicates an attempt to lure users to malicious content.

Heuristics 3

  • 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.
  • 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.cc/pify?keyword=boris+fx+graffiti
    • http://susoxawod.wsli-coalition.org/uploads/1/3/0/8/130873804/sirana.pdf
    • http://files.blaqbear.ca/uploads/1/3/0/8/130814177/7645196.pdf
    • http://files.coronadonaples.com/uploads/1/3/1/4/131437402/8d6b02901d4f155.pdf
    • https://cdn.shopify.com/s/files/1/0429/2663/7223/files/46555189889.pdf
    • https://cdn.shopify.com/s/files/1/0431/8114/6280/files/fupota.pdf
    • https://cdn.shopify.com/s/files/1/0433/0173/2520/files/guduse.pdf
    • https://cdn.shopify.com/s/files/1/0434/2412/0997/files/kukebifijumagamekajunul.pdf
    • https://cdn.shopify.com/s/files/1/0434/8392/2585/files/anthony_robbins_awaken_the_giant_within.pdf
    • https://cdn.shopify.com/s/files/1/0429/6785/9359/files/lopozemokavej.pdf
    • https://cdn.shopify.com/s/files/1/0430/6406/6201/files/bella_italia_dessert_menu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7650/9080/files/kids_stories.pdf
    • https://cdn.shopify.com/s/files/1/0433/6576/1176/files/sway_back_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0431/1279/2221/files/bofamoduligozin.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9946/files/26801361195.pdf
    • https://cdn.shopify.com/s/files/1/0440/4481/2438/files/2262518354.pdf
    • https://cdn.shopify.com/s/files/1/0437/0153/4875/files/vanikopuzagirono.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006091.bin
12597367abc069fc97cbebd4e67ac5cad244b3ae34156cc5108ccc4b1e50db33
pdf-font-stream PDF embedded font (sfnt) at offset 0x6091 5020 bytes
font_01_sfnt_off000071c3.bin
c3c3623e1774ff2ad9eb89a582734e0aa73a02dee49a7bd11f40df7b7223e1a8
pdf-font-stream PDF embedded font (sfnt) at offset 0x71C3 10160 bytes