Malicious PDF — malware analysis report

Static analysis result for SHA-256 efdede4aecee8b3d…

MALICIOUS

PDF

48.8 KB Created: 2020-08-02 04:44:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e0c6d4f9fd5a34ed09023c033138861 SHA-1: e89105308428ff1ae2b1721b596d183d561a5b3c SHA-256: efdede4aecee8b3d0485457ab151a517c34babc8a8e0674bb9dbeff0864ac1ae
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at https://ttraff.ru/pify?keyword=autotune+in+garageband. This suggests the document's primary purpose is to redirect users to malicious infrastructure. The document body, though heavily obfuscated, contains this URL, reinforcing the malicious intent. No scripts were extracted, limiting the analysis of further stages.

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=autotune+in+garageband
    • http://files.chiefetchbergerfoundation.org/uploads/1/3/2/6/132696325/vawap.pdf
    • http://files.theonealexyoung.com/uploads/1/3/2/3/132302764/fa06e.pdf
    • http://files.bluemarlin3grancanaria.com/uploads/1/3/2/6/132681694/80d662ad70.pdf
    • http://files.mcspg.com.au/uploads/1/3/1/8/131855992/5324397.pdf
    • https://cdn.shopify.com/s/files/1/0430/7861/5189/files/15536720236.pdf
    • https://cdn.shopify.com/s/files/1/0437/8080/0674/files/moviebox_ios_10._2.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/33374625424.pdf
    • https://cdn.shopify.com/s/files/1/0432/4130/8319/files/31993102183.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71299233386.pdf
    • https://cdn.shopify.com/s/files/1/0428/9373/8143/files/rexikoresopusofenumom.pdf
    • https://cdn.shopify.com/s/files/1/0429/1903/5033/files/luvorasoxavixokugeziju.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/zukenunagugituduwad.pdf
    • https://cdn.shopify.com/s/files/1/0428/3426/4231/files/jujokiwobudigudenato.pdf
    • https://cdn.shopify.com/s/files/1/0429/4829/6857/files/dogetizugebaxosigumav.pdf
    • https://cdn.shopify.com/s/files/1/0430/3860/5461/files/purofuruzivibavetugus.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_off00006bf6.bin
24d5e0fa318d1cda48047fd379c848de2e1e23343ce95b06c72f02a7d6f3d610		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF6 4912 bytes
font_01_sfnt_off00007cb7.bin
2195c065c04f9bddc1f7d6e4be8b7e3a9798bc6b0e2cb52741973f71ece6ee2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB7 10360 bytes
font_02_sfnt_off0000a069.bin
3f8ab2d0dd01035a0516477c01324681448b3b74ca8b6fee773bed620f7f6ab7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA069 16568 bytes

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