Malicious PDF — malware analysis report

Static analysis result for SHA-256 48a57cce95a17b29…

MALICIOUS

PDF

43.0 KB Created: 2020-08-31 09:40:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 891b62ddeac0bf3899baa6dc824424ca SHA-1: 411595a3c5d86c2e44ff8476b97f76843b5d56c5 SHA-256: 48a57cce95a17b29d73999da5f8890c0319346344542e70f1964c36fcf017375
120 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=lenovo+thinkpad+p50'. Additionally, it exhibits a PDF SEO link farm pattern, embedding numerous external links, with the first identified as 'https://cdn.shopify.com/s/files/1/0433/3695/8104/files/mufamepopuwololaxegowe.pdf'. The document body, though partially corrupted, contains text related to 'Lenovo thinkpad p50' and the authoring application 'wkhtmltopdf', suggesting a lure to disguise malicious links as product information. The presence of these elements indicates an attempt to redirect users to potentially harmful 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=lenovo+thinkpad+p50
    • https://cdn.shopify.com/s/files/1/0433/3695/8104/files/mufamepopuwololaxegowe.pdf
    • https://cdn.shopify.com/s/files/1/0438/1832/0034/files/72229050166.pdf
    • https://cdn.shopify.com/s/files/1/0434/5747/8823/files/72257074574.pdf
    • https://static.usrfiles.com/ugd/09c3c7_2046b79c405d4409b179d678fa0c3cb5.pdf
    • https://static.usrfiles.com/ugd/590778_a9c3f49e5ce0402e8df2e2aa17004765.pdf
    • https://static.usrfiles.com/ugd/0a593f_2aad88736d69488391253c4b82dde2b6.pdf
    • https://static.usrfiles.com/ugd/dc8a8e_951b2f2eb1124a41a68946e80d6de283.pdf
    • https://static.usrfiles.com/ugd/ee6770_0448b922b3c14c0bb6678bd306c9eb1c.pdf
    • https://static.usrfiles.com/ugd/5b604d_adb25baf61f447e49f04f07ad3375da0.pdf
    • https://static.usrfiles.com/ugd/b8c837_b0ad4987847744cd9d878a83d8b35a12.pdf
    • https://static.usrfiles.com/ugd/cc089a_bd68be4a88ef4793aa2bb0a4b1365aca.pdf
    • https://static.usrfiles.com/ugd/b5472a_53ee97c7af404682a5b47e3981b38612.pdf
    • https://static.usrfiles.com/ugd/b8c837_5844bef1d722463685ebc3e8c95d2e04.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_off00006acf.bin
9ad9ecef8be02e3570e11a23d5d8131309af15f3ff4ebdd172b6aa4177576cd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ACF 5072 bytes
font_01_sfnt_off00007c19.bin
67329d63865aa80dc35f8652a3da968e97694e86499e12fdbf39d66779403765		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C19 10556 bytes

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