Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c28cde5b7cf78d5…

MALICIOUS

PDF

40.5 KB Created: 2020-08-30 05:26:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6951b7bf71b5c21f8ab5cb6b0daace5d SHA-1: 648ee32e08bd972e3593412dbb26f903a0f8e8d9 SHA-256: 2c28cde5b7cf78d55a776803d4b36b05e582c5be3fd1d0643f336bfc283f0d17
120 Risk Score

Malware Insights

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

The PDF file contains embedded links that point to a known malicious redirector. The document body, though heavily obfuscated, appears to contain text related to a construction schedule and the malicious URL itself. This suggests a phishing attempt to redirect users to malicious infrastructure.

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=residential+house+construction+schedule
    • https://static.usrfiles.com/ugd/b52961_28e909cf252844ab91af09197bda86ab.pdf
    • https://static.usrfiles.com/ugd/599f1c_34716540914e4d7ca56f14e843859adf.pdf
    • https://static.usrfiles.com/ugd/9757e7_3dbe5be52206460d9e94245205ad70bd.pdf
    • https://cdn.shopify.com/s/files/1/0434/6858/7174/files/fekizozepopusuvomonar.pdf
    • https://cdn.shopify.com/s/files/1/0435/8068/6491/files/zaragazolalesimizo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8619/2546/files/13868844129.pdf
    • https://cdn.shopify.com/s/files/1/0435/9208/9759/files/94852111227.pdf
    • https://cdn.shopify.com/s/files/1/0432/4275/0114/files/xilawafetejetunidorufin.pdf
    • https://cdn.shopify.com/s/files/1/0434/5305/5128/files/application_for_australian_citizenship.pdf
    • https://cdn.shopify.com/s/files/1/0434/0174/0439/files/castrol_edge_professional_c1_5w_30.pdf
    • https://cdn.shopify.com/s/files/1/0439/3772/6622/files/dj_remix_baul_song.pdf
    • https://static.usrfiles.com/ugd/b8c837_8043af42bcc84705b582dd79563a3697.pdf
    • https://static.usrfiles.com/ugd/735189_3d5aa6f9e7fb48139d51bd691d920532.pdf
    • https://static.usrfiles.com/ugd/cafc24_99b565d6c7de4fd3b72aecc97f09c745.pdf
    • https://static.usrfiles.com/ugd/b8c837_951fbc97f0314ad6833cd4c16376dd10.pdf
    • https://static.usrfiles.com/ugd/daca0d_77dac1494f8f46429edcc1cac969dd94.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_off00006207.bin
738633a4361c046f01d968093cd57b36f5e288fbc2e305d33e842b31ec6a4322		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6207 5032 bytes
font_01_sfnt_off00007318.bin
a46de3bb6f99142a4745170551eea36022b0f2e6319d85d2f6a8a1db896b46ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7318 9836 bytes

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