Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5d634c96cd38b1d…

MALICIOUS

PDF

67.5 KB Created: 2020-08-07 21:18:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 020a44249eea1d594b8083bccc21aeb9 SHA-1: 728e82d5b570c24857fba45dd538024ad1fe8549 SHA-256: e5d634c96cd38b1d28a0ffba15ed3599736fc79a4668068f22ba33b6c8c72838
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. The presence of the URL 'https://ttraff.com/pify?keyword=pathfinder+2+playtest+bestiary+pdf' within the document body suggests a lure to a potentially malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=pathfinder+2+playtest+bestiary+pdf
    • http://files.ardsleyeducationfoundation.org/uploads/1/3/0/8/130813913/bizazamakikaraju.pdf
    • http://files.magisterseniusu.com/uploads/1/3/1/8/131858287/9681e.pdf
    • http://gelir.my3sonswindows.com/uploads/1/3/1/4/131438539/rewiwezutakevup.pdf
    • http://files.ardsley
    • https://cdn.shopify.com/s/files/1/0433/2158/9913/files/vuwunomotuwepifekupikinud.pdf
    • https://cdn.shopify.com/s/files/1/0434/2261/3654/files/xulafigi.pdf
    • https://cdn.shopify.com/s/files/1/0432/0477/1999/files/96656416384.pdf
    • https://cdn.shopify.com/s/files/1/0435/5905/9615/files/figinetoni.pdf
    • https://cdn.shopify.com/s/files/1/0447/9166/0695/files/lee_sin_jg_build.pdf
    • https://cdn.shopify.com/s/files/1/0428/0313/4627/files/palubupinotidugifewosiza.pdf
    • https://cdn.shopify.com/s/files/1/0433/6621/9941/files/55593865696.pdf
    • https://cdn.shopify.com/s/files/1/0440/3383/5173/files/absceso_hepatico_pediatria.pdf
    • https://cdn.shopify.com/s/files/1/0447/5823/7333/files/hydrogen_spectral_lines.pdf
    • https://cdn.shopify.com/s/files/1/0433/5370/2550/files/81135599809.pdf
    • https://cdn.shopify.com/s/files/1/0431/4962/3462/files/97196214607.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_off0000cba0.bin
59660253ca2f1123212eb3005c85056318507a505cd83bd0a0ebb70d59343659		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA0 5504 bytes
font_01_sfnt_off0000de56.bin
88f31c861d228f5acea357f69b4a4a6e69d7f101e513e86389bfe71164f28d06		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE56 10060 bytes

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