Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a24a54b50423135…

MALICIOUS

PDF

58.6 KB Created: 2020-08-18 14:48:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7611ab6f9e263bee9b42e0bacbf27a8f SHA-1: d4279dc83950bba9d7c6921f1a81342a73767f28 SHA-256: 4a24a54b50423135ce52ec30321c4109ed21ff8d0971611e1db3cda040886ec5
120 Risk Score

Malware Insights

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

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 cdn.shopify.com. The document body, though heavily obfuscated, contains the same malicious URL, suggesting the primary intent is to redirect the user to this malicious site. No scripts were extracted from this sample.

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=darksiders+warmastered+edition+achievement+guide+and+roadmap
    • http://files.screenvortex.com/uploads/1/3/0/8/130874520/radan.pdf
    • http://xitili.tssusart.com/uploads/1/3/1/4/131437792/4015169.pdf
    • http://files.oxbowriversnorkeling.com/uploads/1/3/0/7/130775223/8772654.pdf
    • https://cdn.shopify.com/s/files/1/0438/8087/4139/files/potijunikiwasememid.pdf
    • https://cdn.shopify.com/s/files/1/0430/3929/3589/files/social_entrepreneurship_defined.pdf
    • https://cdn.shopify.com/s/files/1/0430/0364/2007/files/31044079910.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9789/files/noraj.pdf
    • https://cdn.shopify.com/s/files/1/0437/8080/0674/files/how_to_sort_data_in_google_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0434/8336/5528/files/14162798746.pdf
    • https://cdn.shopify.com/s/files/1/0435/5604/4951/files/amazon_fba_books.pdf
    • https://cdn.shopify.com/s/files/1/0439/2786/3464/files/bad_company_2_player_count.pdf
    • https://cdn.shopify.com/s/files/1/0439/3595/7147/files/actuarial_mathematics_for_life_contingent_risks.pdf
    • https://cdn.shopify.com/s/files/1/0428/7148/8668/files/47022280282.pdf
    • https://cdn.shopify.com/s/files/1/0441/3220/4696/files/tozilajululifikivodik.pdf
    • https://cdn.shopify.com/s/files/1/0431/0673/0138/files/dovesenowoxonufeduzot.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_off0000a654.bin
106d7e847e80de8ea5ffc37a931aba9946cbc94b60905deebfbed63ac21d7a3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA654 5672 bytes
font_01_sfnt_off0000b99a.bin
1934f029e6d48c39f56b9631462a6be2f815de466558aeee620fc6efef582dc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB99A 10360 bytes

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