Malicious PDF — malware analysis report

Static analysis result for SHA-256 c556176a155380e2…

MALICIOUS

PDF

40.1 KB Created: 2020-08-30 16:54:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0f1a256cb76824b1c80859ddd5f30cea SHA-1: 5493d0be208e42fcd768504ed61ca39e9f5df876 SHA-256: c556176a155380e21285ee97c52424199fc0dfd535d9ee8921ff0f14a76b87b6
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=at+long+last+asap+album+download+zip'. This link is presented within the document body, likely disguised as a download button, to entice users to click. The PDF also exhibits characteristics of an SEO link farm, with numerous external links, suggesting an attempt to manipulate search results or distribute malicious content through various channels. While no scripts were extracted, the presence of a malicious redirector and the lure of a download button strongly indicate a phishing or malware distribution attempt.

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.cc/wix?keyword=at+long+last+asap+album+download+zip
    • https://static.usrfiles.com/ugd/b8c837_7ab01781d3474c49a422571828fbf4a2.pdf
    • https://static.usrfiles.com/ugd/8b2c09_191d38ec1dc54850a6dab46f2d532284.pdf
    • https://static.usrfiles.com/ugd/fe83c3_b7954df5690d4fb49165d5aa0e34968b.pdf
    • https://static.usrfiles.com/ugd/760101_39c14ac02f2d4e7385130048bd270b78.pdf
    • https://static.usrfiles.com/ugd/b8c837_d02a41116f164952b86f8f50b2fc6efe.pdf
    • https://cdn.shopify.com/s/files/1/0436/1335/6189/files/pokemon_reborn_debug_mode_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/4326/5434/files/95391658439.pdf
    • https://cdn.shopify.com/s/files/1/0437/3040/3477/files/duvola.pdf
    • https://cdn.shopify.com/s/files/1/0436/8501/9801/files/90150627694.pdf
    • https://cdn.shopify.com/s/files/1/0429/1434/9219/files/vaxelafogajer.pdf
    • https://cdn.shopify.com/s/files/1/0431/1603/6257/files/vogatamobepuwidav.pdf
    • https://cdn.shopify.com/s/files/1/0433/7922/8833/files/82101162214.pdf
    • https://cdn.shopify.com/s/files/1/0428/4101/4438/files/wisaligufusunotewasikegi.pdf
    • https://cdn.shopify.com/s/files/1/0435/9720/1576/files/vogejax.pdf
    • https://cdn.shopify.com/s/files/1/0433/9017/3349/files/wanejenup.pdf
    • https://cdn.shopify.com/s/files/1/0431/6299/2795/files/82568330820.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_off00005d64.bin
a5e97ee459f89a22222871d1b61a67d5d6cdcefa59589a7317b2a6266ae64efb
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D64 5456 bytes
font_01_sfnt_off00006ff0.bin
44381630a929d6306c1dc953dd8f0e20419919358520285ec3205db43f37ec9a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF0 10332 bytes