Malicious PDF — malware analysis report

Static analysis result for SHA-256 886b2fcd977346e7…

MALICIOUS

PDF

41.9 KB Created: 2020-08-02 20:52:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a91fc674cb6a47aae871e94cd982965 SHA-1: f0abb94fb16c45022591e5082650f658a103813c SHA-256: 886b2fcd977346e78363dae5c1200e221a7cfb24c21e2ee4136352f266e2cdc6
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=rang+and+dale+pharmacology+pdf'. This indicates an attempt to redirect the user to a malicious site under the guise of providing a pharmacology PDF. The document body also contains this URL and several other Shopify-hosted PDF links, suggesting a link farm or SEO poisoning tactic to attract victims. The primary malicious IOC is the redirector URL.

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.ru/pify?keyword=rang+and+dale+pharmacology+pdf
    • http://files.hesaidshesaidproductions.com/uploads/1/3/1/4/131438639/d64ad1101c7776.pdf
    • http://jigaluk.charlotteturkeybowl.com/uploads/1/3/2/7/132740805/rubopuna.pdf
    • http://files.urbandesignmentalhealth.com/uploads/1/3/0/7/130775747/04da9a3318c5.pdf
    • https://cdn.shopify.com/s/files/1/0431/6486/0580/files/givekotaxubeku.pdf
    • https://cdn.shopify.com/s/files/1/0434/1468/3815/files/fowowuva.pdf
    • https://cdn.shopify.com/s/files/1/0427/6640/1692/files/dazibudafuvazutax.pdf
    • https://cdn.shopify.com/s/files/1/0429/7529/7689/files/vogeda.pdf
    • https://cdn.shopify.com/s/files/1/0429/5612/8412/files/waxujub.pdf
    • https://cdn.shopify.com/s/files/1/0428/2246/7740/files/ratuxevokop.pdf
    • https://cdn.shopify.com/s/files/1/0437/8977/9106/files/77396054693.pdf
    • https://cdn.shopify.com/s/files/1/0433/4606/7621/files/nudofe.pdf
    • https://cdn.shopify.com/s/files/1/0434/5410/3713/files/lazuxezajavof.pdf
    • https://cdn.shopify.com/s/files/1/0440/9776/5528/files/logenolawuguxorepawu.pdf
    • https://cdn.shopify.com/s/files/1/0427/8019/7031/files/32970327478.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_off00006494.bin
2809a083ff300a970cfda0c8d3e83a19ef4a7902dec984c255d9fbf4d499357f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6494 5500 bytes
font_01_sfnt_off00007733.bin
859d1153502e224a6588141a704e1f279eee64f3c7412a9f7d6300bd6fd80573		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7733 10368 bytes

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