Malicious PDF — malware analysis report

Static analysis result for SHA-256 fddf5937c885f33c…

MALICIOUS

PDF

61.4 KB Created: 2020-08-22 05:10:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06bad366a6d89710fa6e1f6df9ad7575 SHA-1: d43d369e3ba3d326b268deb8bc4c9840c2b1d327 SHA-256: fddf5937c885f33cd133d195c81bf32d3720c91ea4c5fe391e68bf2d30035919
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a lure for remote support tools, instructing the user to download software. It also features a mass external PDF link farm, with one URL pointing to a known malicious redirector. The primary malicious URL is https://ttraff.cc/pify?keyword=ashton+manual+alcohol, which likely serves as a gateway to further malicious content.

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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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.cc/pify?keyword=ashton+manual+alcohol
    • http://files.vergejxn.org/uploads/1/3/2/6/132681949/7285785.pdf
    • http://rasivu.artworkskenosha.net/uploads/1/3/1/4/131407588/koxuwabiga-rizowizolasada-jitupumuvavin-zovinodi.pdf
    • http://files.gcpageants.com/uploads/1/3/1/8/131856672/kobewufegoj.pdf
    • https://cdn.shopify.com/s/files/1/0431/9579/3557/files/lanuzaduposevepabuvepofu.pdf
    • https://cdn.shopify.com/s/files/1/0440/9645/4808/files/teamviewer_quicksupport_version_10.pdf
    • https://cdn.shopify.com/s/files/1/0427/7154/6279/files/78716733966.pdf
    • https://cdn.shopify.com/s/files/1/0435/1524/8794/files/71394567322.pdf
    • https://cdn.shopify.com/s/files/1/0429/8519/3625/files/28146684335.pdf
    • https://cdn.shopify.com/s/files/1/0431/5067/2033/files/81383554187.pdf
    • https://cdn.shopify.com/s/files/1/0450/9886/0707/files/nufiladewotodejuwefazan.pdf
    • https://cdn.shopify.com/s/files/1/0427/8406/3654/files/94437340562.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xumilegimazuguvabunozanik.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_off0000b3ac.bin
08758bb27ae30019a5d4996b4884d8b06a87cea0b7bad50d83197b2599aedd1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3AC 4932 bytes
font_01_sfnt_off0000c43b.bin
718a0a4071f4e333c7c98333540f73cb0e88ad699158f9e6f996ebc324463162		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC43B 10744 bytes

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