Malicious PDF — malware analysis report

Static analysis result for SHA-256 c16be9508a183ca3…

MALICIOUS

PDF

53.5 KB Created: 2020-08-31 00:09:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bdae43da501dcbc02d9a4fa5669b60cb SHA-1: 6da1af6fa85a363dfe9c3c28fca4a59cd6b85052 SHA-256: c16be9508a183ca3da248eb80a5b98cdbbc095ffcb6c3588460b935710e6bf7d
160 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=shelby+gt350+review'. This URL is likely part of an advance-fee scam or phishing lure, as indicated by the 'SE_ADVANCE_FEE_SCAM_LURE' heuristic. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary mechanism for the attack. No scripts were extracted, and the PDF structure itself is not inherently malicious beyond the embedded link.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=shelby+gt350+review
    • https://static.usrfiles.com/ugd/7c3584_4bab70281cbb4ead9ca759dd619b11b8.pdf
    • https://static.usrfiles.com/ugd/e02969_d48eab511bf34aa7a2a674a9699db657.pdf
    • https://static.usrfiles.com/ugd/93971e_bd255161516e4923acc181104a4aaed2.pdf
    • https://cdn.shopify.com/s/files/1/0438/1471/5549/files/angulo_central_e_inscrito_exercicios.pdf
    • https://cdn.shopify.com/s/files/1/0447/8477/9430/files/60511256073.pdf
    • https://cdn.shopify.com/s/files/1/0434/9024/6822/files/kenebuwimaxopoziburise.pdf
    • https://cdn.shopify.com/s/files/1/0437/6113/9861/files/cluster_computing_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44411244229.pdf
    • https://cdn.shopify.com/s/files/1/0450/6845/1992/files/java_projects_for_students.pdf
    • https://cdn.shopify.com/s/files/1/0434/0026/5878/files/tefitujonatesetuzerar.pdf
    • https://cdn.shopify.com/s/files/1/0451/1806/2746/files/dead_poets_society_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/7848/3096/files/mugemukix.pdf
    • https://cdn.shopify.com/s/files/1/0429/2601/4630/files/30458889508.pdf
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/lisozuxagilowejovex.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_off0000932c.bin
257c929ac9f661004a0737ae5b669741b0d85e310189c75d83bfa8a1f4e3dea8
pdf-font-stream PDF embedded font (sfnt) at offset 0x932C 5484 bytes
font_01_sfnt_off0000a5fe.bin
0d5f4d8b9a4de898cab43b490e908cbd7bc370547e289b7d15a09224021348ab
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5FE 10248 bytes