Malicious PDF — malware analysis report

Static analysis result for SHA-256 7803bf473dfea752…

MALICIOUS

PDF

38.7 KB Created: 2020-09-01 08:27:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0fd9f74968a46cbe66c03fed0676cf3d SHA-1: d44280ad40aa70a3e195a961de5de8401893a95b SHA-256: 7803bf473dfea7524a4ddc4dbce6d22dde8c6d454058d8a2b835a90075cda9e1
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. It also exhibits a PDF link farm heuristic, with numerous links hosted on Shopify, suggesting an attempt to obscure the final malicious destination. The document body contains a call-to-action phrase, reinforcing the lure to click the embedded link, which likely leads to further malicious content or malware download.

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/wix?keyword=host+family+applicant+listening+answer+key
    • https://cdn.shopify.com/s/files/1/0431/5892/9570/files/access_denied_system_volume_information.pdf
    • https://cdn.shopify.com/s/files/1/0434/5505/3989/files/bcdedit._exe_for_xp.pdf
    • https://cdn.shopify.com/s/files/1/0437/9928/1821/files/43701382794.pdf
    • https://cdn.shopify.com/s/files/1/0432/9357/3288/files/lijidave.pdf
    • https://cdn.shopify.com/s/files/1/0448/5431/3122/files/valve_actuating_mechanism.pdf
    • https://cdn.shopify.com/s/files/1/0431/9232/0161/files/74572118520.pdf
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/gikebujewiselobetumidixiv.pdf
    • https://cdn.shopify.com/s/files/1/0437/3990/6197/files/zelonikaniri.pdf
    • https://cdn.shopify.com/s/files/1/0436/4389/5966/files/magento_enterprise_user_guide.pdf
    • https://cdn.shopify.com/s/files/1/0439/2163/7544/files/28680423904.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_off00005935.bin
6ad349405b177dceca479c9f236b9c1becc8f8164fc4f73dc86f1af9b6533fc8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5935 5556 bytes
font_01_sfnt_off00006c1d.bin
2eb3895c960ee43ea84ba5da8ec0d2c4ad4bca7d0f5faab05e2b61c7b9030cbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C1D 10236 bytes

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