Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd0b029b655b1d2a…

MALICIOUS

PDF

43.5 KB Created: 2020-08-28 20:06:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5197dc31e7bd707f33d652684fc16b76 SHA-1: 50965157ef8e19c6275f2b1aa77c8b1760ce76a7 SHA-256: cd0b029b655b1d2a6da3c83dadb363fba8ba0ac1e06e426f123ad0f84f9fe007
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1200 Hardware Add-Override

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector link to 'ttraff.cc'. Another critical heuristic identified it as a PDF SEO link farm, containing many external PDF links. The document body also explicitly contains the malicious URL and several benign-looking PDF links, suggesting a lure to trick users into clicking through to malicious content.

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=digital+heretic+read+online
    • https://static.usrfiles.com/ugd/b8c837_aaf9192b759d4957b97fc0fac42a4e34.pdf
    • https://static.usrfiles.com/ugd/b8c837_cac89a27fce747b0a6f67eab3ad22d83.pdf
    • https://static.usrfiles.com/ugd/b8c837_3e7e3e65401943a5aa08e868718d254c.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/35209966956.pdf
    • https://static.usrfiles.com/ugd/b8c837_3f1b2fc291d84aa599e22554a97cf840.pdf
    • https://static.usrfiles.com/ugd/b8c837_c180215a48c347af82da553412fb9ca4.pdf
    • https://static.usrfiles.com/ugd/b8c837_2feb2f00adbc4d52b2ca40b7817f0849.pdf
    • https://static.usrfiles.com/ugd/b8c837_0d0110ccc70e491da8c19d887a9b0a4b.pdf
    • https://static.usrfiles.com/ugd/b8c837_2f5f02556bc54717b8328048df782305.pdf
    • https://cdn.shopify.com/s/files/1/0438/2500/4706/files/ansys_fluent_meshing_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0401/files/26105121094.pdf
    • https://cdn.shopify.com/s/files/1/0432/9901/2766/files/adobe_editor_apk.pdf
    • https://cdn.shopify.com/s/files/1/0431/1616/7328/files/20983598067.pdf
    • https://cdn.shopify.com/s/files/1/0435/5093/3156/files/mavawufunekelune.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_off00006db6.bin
6afa14e9c5f14b4ec965fa3cb534bd5622793007d19d15e26102fe6f86246709		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB6 5020 bytes
font_01_sfnt_off00007eba.bin
c62287fbe17d4d195dab5c30ec159939194bf3ae1b4bff6a75335bc39b516034		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EBA 10088 bytes

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