Malicious PDF — malware analysis report

Static analysis result for SHA-256 881915f3b681fb02…

MALICIOUS

PDF

40.6 KB Created: 2020-08-16 18:50:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ede20ba837b6c28c5668c58f419ff9b SHA-1: bfa368d73772ab4ffd7704e5e21768e67d6c1f89 SHA-256: 881915f3b681fb02d39c3b5d858281b5aef486f2f65d6b4fcf2dba01dfca5028
130 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the link at https://ttraff.com/pify?keyword=equipment+qualification+report points to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many hosted on cdn.shopify.com, suggesting an attempt to create a link farm or distribute content from various sources. The presence of a 'download button' lure further supports a malicious intent to trick the user into clicking through to a potentially harmful destination.

Heuristics 4

  • 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.
  • 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
  • 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=equipment+qualification+report
    • http://bokuwe.quieteroahu.com/uploads/1/3/1/6/131637284/musewasozaforugud.pdf
    • http://solagutoj.kellygallaher.com/uploads/1/3/1/6/131637814/8e3a992d80dd4.pdf
    • http://lubazina.epindustries.co.uk/uploads/1/3/2/8/132814930/481bb3ed1b22bc3.pdf
    • https://cdn.shopify.com/s/files/1/0434/8909/9938/files/skyrim_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/5258/7415/files/nemabe.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9841/files/zojipovedale.pdf
    • https://cdn.shopify.com/s/files/1/0431/9176/3105/files/9546186129.pdf
    • https://cdn.shopify.com/s/files/1/0433/7188/8803/files/22452861537.pdf
    • https://cdn.shopify.com/s/files/1/0439/3716/9576/files/animasi_ppt_terbaru.pdf
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/lorna_jane_size_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/6449/1174/files/7797619595.pdf
    • https://cdn.shopify.com/s/files/1/0439/3913/5643/files/jumisajudaditawal.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_off00006204.bin
88c0f5236947398b59e20c5d40ce340a9d120d3b7c5e16cd9d73eff2788abef4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6204 5068 bytes
font_01_sfnt_off0000732c.bin
1b092e5b9e484ebebdda0bfe507f5a40bd482824313659b3cb8b7a812afbdd4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x732C 10296 bytes

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