Malicious PDF — malware analysis report

Static analysis result for SHA-256 47454cd411991000…

MALICIOUS

PDF

54.5 KB Created: 2020-08-23 01:48:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b50fb261b47360cd752d7a231870730 SHA-1: 37f083552187500e242986c98dfbdcd084811ad5 SHA-256: 47454cd4119910007ad588c4a18b5c9e5454ca161dacb2149af2d085544b0734
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a lure related to a scholarship application form, which is a common social engineering tactic. It embeds numerous links, including one to a known malicious redirector at 'ttraff.com'. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this, and 'PDF_SEO_LINK_FARM' indicates a large number of external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the malicious URL and a link to a PDF hosted on Shopify, suggesting a download lure. The presence of a visual download button further supports a malicious workflow.

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=st+benilde+scholarship+application+form
    • http://nuzinugeg.tristategrp.com/uploads/1/3/2/6/132681352/sufekevulekanok-vegatone.pdf
    • https://cdn.shopify.com/s/files/1/0438/2962/4992/files/bluestacks_para_android_apk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kozaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/2940/5600/files/el_poder_del_kabbalah_libro.pdf
    • https://cdn.shopify.com/s/files/1/0432/6588/4323/files/wumofubuzaxikuvezajesewil.pdf
    • https://cdn.shopify.com/s/files/1/0439/5725/6350/files/60900994658.pdf
    • https://cdn.shopify.com/s/files/1/0433/6871/0309/files/8989746292.pdf
    • https://cdn.shopify.com/s/files/1/0437/3377/8597/files/22956827199.pdf
    • https://cdn.shopify.com/s/files/1/0438/7520/5288/files/30196448710.pdf
    • https://cdn.shopify.com/s/files/1/0430/7573/1616/files/68500276200.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007cb0.bin
27ba5d1e7eaee7fed58d7b3b6e0f0a9e5ea48d4a8a17ed6bb47862e44ecd2546		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB0 5636 bytes
font_01_sfnt_off00008fa0.bin
dbcad7c0b7894369485dcf7ac69610ab07b43b3cb9791afcc527d67b7541cec7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FA0 11528 bytes
font_02_sfnt_off0000b62f.bin
bd631c5074e937664eb3c9b106d9804ed1da23357d1b73ef9a394c59539cd413		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB62F 16680 bytes

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