Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b0f9ad295b64f9c…

MALICIOUS

PDF

47.0 KB Created: 2020-08-29 09:22:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac80f44899e4a855f2226feb33466cae SHA-1: 98ba35afdf856b9fbd0cb3481d296812075958e4 SHA-256: 1b0f9ad295b64f9c258db47bbf3718e21c9dec3512b50ac618020a240fa0c5d2
128 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to known malicious redirector infrastructure. The document body, though heavily obfuscated, appears to be a lure related to 'Alberta blue cross health care claim form', aligning with the 'SE_INVOICE_LURE' heuristic. The presence of numerous external PDF links suggests a link farm strategy, likely to improve SEO for malicious content or to distribute further payloads.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=alberta+blue+cross+health+care+claim+form
    • https://cdn.shopify.com/s/files/1/0432/0290/4222/files/as_fast_as_words_could_fly.pdf
    • https://cdn.shopify.com/s/files/1/0433/9862/7495/files/canobd2_diagnostic_tool.pdf
    • https://cdn.shopify.com/s/files/1/0434/7048/7712/files/absite_surgery_review_free.pdf
    • https://static.usrfiles.com/ugd/b8c837_4905dd20423c4a19945806edca35267b.pdf
    • https://static.usrfiles.com/ugd/b8c837_931200a67fff4940b176ef1a7a5e02f0.pdf
    • https://static.usrfiles.com/ugd/b8c837_b93bcd57c61e4d7ba3303213c9af9678.pdf
    • https://static.usrfiles.com/ugd/b8c837_f3cef1cc23c247f3925f3d2d4387b180.pdf
    • https://static.usrfiles.com/ugd/b8c837_a88913aca34a46ac801ddf5c6929cbb0.pdf
    • https://static.usrfiles.com/ugd/b8c837_0c66bee8f36240ab9f0693405fe6d8ca.pdf
    • https://cdn.shopify.com/s/files/1/0429/8116/3157/files/5.pdf
    • https://cdn.shopify.com/s/files/1/0440/7400/8741/files/43889521330.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006aa8.bin
243fe0fec94e5a6caa6ccfd15b3327745f4f9e953f16451bbd1c76d4b5d72c8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA8 5024 bytes
font_01_sfnt_off00007bba.bin
e7d95dc8a7abe8dba5c5262eacbf68635b7be0fab7a144abf9f938ab8628443c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BBA 10364 bytes
font_02_sfnt_off00009f0b.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F0B 4324 bytes

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