Malicious PDF — malware analysis report

Static analysis result for SHA-256 220411cc613cb312…

MALICIOUS

PDF

35.3 KB Created: 2020-08-22 01:56:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0bc16653dd504f0a446234696a5c6eb1 SHA-1: 79143257d75da5ad4b47e3737273d5d3719adff4 SHA-256: 220411cc613cb3129e0e7c7e828a7733336eb0183334ca34788c97c7081b3777
168 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external PDF links, many hosted on cdn.shopify.com, which is indicative of a link farm. The document also contains a lure for remote support software, suggesting the intent is to trick the user into installing potentially unwanted or malicious remote access tools. The primary malicious URL identified is https://ttraff.cc/pify?keyword=ammyy+admin+3.+5+software, which redirects to further content.

Heuristics 5

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=ammyy+admin+3.+5+software
    • http://vizupivo.fishermanswifelife.com/uploads/1/3/1/6/131637881/1b3850ced1f20.pdf
    • https://cdn.shopify.com/s/files/1/0435/6302/4547/files/15397622933.pdf
    • https://cdn.shopify.com/s/files/1/0432/3190/3902/files/67416587104.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7086/files/mebixuwuregadamemuwuwi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3883/3816/files/jabokerinodopitap.pdf
    • https://cdn.shopify.com/s/files/1/0431/4664/1570/files/34926927621.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65760981278.pdf
    • https://cdn.shopify.com/s/files/1/0434/6370/4738/files/3387016714.pdf
    • https://cdn.shopify.com/s/files/1/0455/6573/9173/files/3319042602.pdf
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/69174773887.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_off00004c29.bin
21b1ecaae3dbc6915150549c7e6b94a7cc1e1bbfe1d7aa211b7784b94e3f1de1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C29 5524 bytes
font_01_sfnt_off00005ef9.bin
90fb1564726f099f35cd9d16ace88ed4e7d4025ac9cf039897cb5abd12ca59e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF9 9968 bytes

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