Malicious PDF — malware analysis report

Static analysis result for SHA-256 d79fcb8ab7bea7fc…

MALICIOUS

PDF

39.6 KB Created: 2020-09-18 16:50:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe603ac72c808beb52960366b00a65f8 SHA-1: dee59d9fa140e8e5a6a06b508ae6d0c75b5d3ccf SHA-256: d79fcb8ab7bea7fc99074f5e8e76c22ec5da2e82d333946b61f42206fbe0d32f
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical link to a known malicious redirector at 'https://ttraff.me/wix?keyword=prosolutions+pills+review'. The document body, though heavily obfuscated, also contains this URL, suggesting a lure for users to click through to potentially malicious content. The presence of numerous other PDF links indicates a link farm strategy, likely for SEO manipulation or to distribute further malicious content.

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.me/wix?keyword=prosolutions+pills+review
    • https://f9ff9071-a0a3-4da5-9142-b67caf1db6d5.filesusr.com/ugd/98e2de_f10580a8dc1444778e272940244797fc.pdf?index=true
    • https://78a07252-67f3-423c-bfe6-275e8873eb97.filesusr.com/ugd/96564c_bbc43f84ac8e4082891ebdcf285b1289.pdf?index=true
    • https://76768dd9-746b-4fd2-8e3b-0e47590d4657.filesusr.com/ugd/115d6e_9d35cb16d55f4875b365cb494e0f0401.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0437/2883/0625/files/husky_pressure_washer_wand.pdf
    • https://cdn.shopify.com/s/files/1/0434/4024/2840/files/64128930421.pdf
    • https://cdn.shopify.com/s/files/1/0427/4978/8327/files/spatial_iq_test_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0427/4136/6951/files/bojofukivuvizijat.pdf
    • https://cdn.shopify.com/s/files/1/0434/6727/6454/files/neluzuxepu.pdf
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/18625579828.pdf
    • https://cdn.shopify.com/s/files/1/0461/9406/5557/files/acronis_true_image_2016_crackeado.pdf
    • https://cdn.shopify.com/s/files/1/0439/5103/0430/files/88531913066.pdf
    • https://cdn.shopify.com/s/files/1/0433/0084/7781/files/badinerie_trumpet.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_off00005e31.bin
6d962b5d9822eb40ee088e8d17ee64b3d176567097a5c2c695e1ec3bcdab1e66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E31 4756 bytes
font_01_sfnt_off00006e80.bin
b3086b9b32b99bf52952c08ebc524c0a6f64b1ecfcdbc360092e81f0c2e24cf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E80 10392 bytes

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