Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe7bfa4786d30cc6…

MALICIOUS

PDF

41.3 KB Created: 2020-08-02 06:12:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 799d66c4d67889cc0230a7f8233d1f45 SHA-1: 58d748448c2340a207bb8352ceb365d84b57cfae SHA-256: fe7bfa4786d30cc6c0a413fc09b961c5db6c32683b5cf36699d08826a0408e0a
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a prominent link that redirects to a malicious URL, disguised as a lure for a 'free xbox game code'. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms this redirection to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, suggesting a spam or phishing campaign. The presence of a 'download button' lure further supports the phishing 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.com/pify?keyword=free+xbox+game+code
    • http://files.stephaniekeltner.com/uploads/1/3/1/3/131378990/3029704.pdf
    • http://files.alisonmckenzieacupuncture.com/uploads/1/3/1/4/131408100/gogodunaleniv.pdf
    • http://files.centralflhomeeducationservices.com/uploads/1/3/0/7/130776167/movakuratuwosuvexav.pdf
    • https://cdn.shopify.com/s/files/1/0431/3792/5269/files/nassim_taleb_net_worth.pdf
    • https://cdn.shopify.com/s/files/1/0431/3523/8301/files/18815995390.pdf
    • https://cdn.shopify.com/s/files/1/0429/6887/5157/files/bewavudupajuruf.pdf
    • https://cdn.shopify.com/s/files/1/0433/9403/9975/files/inverse_matrix_in_r.pdf
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/6526718247.pdf
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/tademojowaduvifetinovaguf.pdf
    • https://cdn.shopify.com/s/files/1/0431/1092/4437/files/19799825301.pdf
    • https://cdn.shopify.com/s/files/1/0437/9839/7085/files/mojujekatidaragasevi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4542/8120/files/90103336023.pdf
    • https://cdn.shopify.com/s/files/1/0436/6349/1222/files/2307192651.pdf
    • https://cdn.shopify.com/s/files/1/0434/7772/9442/files/23227985489.pdf
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/povexot.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/
    • https://cdn.shopify.com/s/files/1/0431/1092/4437/files/197998253

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064c6.bin
b364c3e826d006d4990057c6129f070df7722e340d38ee241ba004336362325a
pdf-font-stream PDF embedded font (sfnt) at offset 0x64C6 5212 bytes
font_01_sfnt_off00007674.bin
f01021f989f2aa9a4cd4e2c4af55415566a2b3d995bd3c6db4ea7eaea43f50f7
pdf-font-stream PDF embedded font (sfnt) at offset 0x7674 9956 bytes