Malicious PDF — malware analysis report

Static analysis result for SHA-256 9348586c70654051…

MALICIOUS

PDF

42.1 KB Created: 2020-08-24 01:47:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 818d930a6988a780382b4f6d4c9a3475 SHA-1: cb945ae7ddafa3979464028a11e26d7fe1c84d52 SHA-256: 9348586c70654051bf4b5498bbe7ca4e699d037425bafdb59be119f7e3bdb5d0
128 Risk Score

Malware Insights

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

The PDF file contains a link farm and a direct link to a redirector disguised as a download for a game. The primary malicious link, 'https://ttraff.ru/pify?keyword=bloons+td+6+full+apk+free', is designed to lead users to malicious content. The presence of a visual download button lure further supports the social engineering aspect of this attack. No scripts were extracted, limiting the analysis of the payload.

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.
  • 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.ru/pify?keyword=bloons+td+6+full+apk+free
    • http://wowufugo.thespeakerstore.co.uk/uploads/1/3/0/8/130874001/5168514.pdf
    • https://cdn.shopify.com/s/files/1/0434/8638/0189/files/zegazakidonevamiwewasuv.pdf
    • https://cdn.shopify.com/s/files/1/0434/3519/6582/files/nupenigunigawuzakoti.pdf
    • https://cdn.shopify.com/s/files/1/0435/4372/4186/files/applications_of_right_triangle_trigonometry_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0441/3010/7544/files/bodakaxinitukutunujozela.pdf
    • https://cdn.shopify.com/s/files/1/0435/2652/0987/files/33808734949.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36103472339.pdf
    • https://cdn.shopify.com/s/files/1/0427/3196/2535/files/zijivekara.pdf
    • https://cdn.shopify.com/s/files/1/0430/9726/0192/files/levikefuwazeworipumavim.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_off00006616.bin
a77a231e61bbfcb59e2acc5305b051aee20d71836a00ff9427e63dd6b34dac6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6616 5300 bytes
font_01_sfnt_off0000782b.bin
712271386975497c61272cc3b9d47cfb06e10cdfe7477678e31d107496111090		 pdf-font-stream PDF embedded font (sfnt) at offset 0x782B 10560 bytes

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