Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbc63ec8fc17949e…

MALICIOUS

PDF

40.0 KB Created: 2020-08-29 17:54:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a83fe8e94300d44ac70ea9e24a56349 SHA-1: bbdc2fa8b179c425499855d90f05eb101fa4060e SHA-256: dbc63ec8fc17949e8eb9fc081ce9c3bb58c618caa806bb5cd5686ca09e92f512
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=summertime+saga+game+download'. This URL is presented within the document body, suggesting a lure to download a game. The file also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farms used to distribute malicious content. No scripts were extracted, but the presence of the malicious redirector and the link farm strongly indicates a phishing or malware distribution attempt.

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.cc/wix?keyword=summertime+saga+game+download
    • https://static.usrfiles.com/ugd/b8c837_9c2b4949788c4213a65bdd99df67cc4b.pdf
    • https://static.usrfiles.com/ugd/b8c837_a8b90daa7390458ea6841abb6d697056.pdf
    • https://static.usrfiles.com/ugd/b8c837_7ec8654f047b474196717cf639bc79e3.pdf
    • https://static.usrfiles.com/ugd/b8c837_92c89f0ed4484e788e34c4f08e9f3aa5.pdf
    • https://static.usrfiles.com/ugd/cc10e7_5d2ceeb92e014dee8d6684e35bbc5cae.pdf
    • https://cdn.shopify.com/s/files/1/0432/7417/4622/files/98024232036.pdf
    • https://cdn.shopify.com/s/files/1/0432/5372/7394/files/79535162940.pdf
    • https://cdn.shopify.com/s/files/1/0435/4578/8584/files/75376079926.pdf
    • https://cdn.shopify.com/s/files/1/0430/3031/5159/files/nadubenuwabofofapa.pdf
    • https://cdn.shopify.com/s/files/1/0432/3305/0779/files/coronary_sinus_anatomy.pdf
    • https://cdn.shopify.com/s/files/1/0461/9455/7091/files/80873737069.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/livoxigugefeguvon.pdf
    • https://cdn.shopify.com/s/files/1/0438/5875/5749/files/6694585460.pdf
    • https://cdn.shopify.com/s/files/1/0432/6978/3720/files/xivigufavavusonivikil.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_off00005cd1.bin
c386627ad00af100ff8b598969ca115c19081e952d68ef577a6a43b5abdaf740		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD1 5340 bytes
font_01_sfnt_off00006ee9.bin
d0311ce3a9eb1ad2e4df6472f5d246abe6b78e401ac24952d0b775bd3583eadd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE9 10796 bytes

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