Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e7e8d13954fc0b6…

MALICIOUS

PDF

63.0 KB Created: 2020-08-09 05:59:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9082bd125014dafb66c9144989a5d821 SHA-1: ed722f1418fbb1d82c5d4bdf49451732a4486914 SHA-256: 3e7e8d13954fc0b64b6f7d9dac7b2a0a50a0a90ef6579f0f3a6a97775cfc998f
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=alma+aridatha+untied+pdf'. Additionally, it exhibits a PDF SEO link farm behavior, embedding numerous external PDF links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the malicious intent. The primary attack pattern involves luring the user to click on these links, which likely leads to further malicious content or exploits.

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/pify?keyword=alma+aridatha+untied+pdf
    • http://xagoveges.themaskcaraartist.com/uploads/1/3/1/3/131380213/fododokekafexip.pdf
    • http://files.mrccustomdesigns.com/uploads/1/3/1/6/131607635/jobojuwumaduremepux.pdf
    • http://files.misscookbook.com/uploads/1/3/1/3/131380345/22bf348a15ff745.pdf
    • http://files.misskatrinasballerinas.com/uploads/1/3/2/7/132741382/9262114.pdf
    • http://files.longosfinancialmarket.com/uploads/1/3/1/3/131384573/4060357.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/40661105285.pdf
    • https://cdn.shopify.com/s/files/1/0440/6558/7352/files/fijexi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1553/5774/files/82274915571.pdf
    • https://cdn.shopify.com/s/files/1/0434/3591/7464/files/shear_force_and_bending_moment_basics.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/72137569176.pdf
    • https://cdn.shopify.com/s/files/1/0433/9017/3333/files/lamozixunabej.pdf
    • https://cdn.shopify.com/s/files/1/0428/9642/5119/files/muvabipasokijawawimadi.pdf
    • https://cdn.shopify.com/s/files/1/0437/8850/1143/files/vugus.pdf
    • https://cdn.shopify.com/s/files/1/0451/9329/8071/files/dazesipifeduxopa.pdf
    • https://cdn.shopify.com/s/files/1/0440/8265/9493/files/darekepewosona.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1931/files/87831778448.pdf
    • https://cdn.shopify.com/s/files/1/0427/7207/0556/files/26614794806.pdf
    • https://cdn.shopify.com/s/files/1/0436/1073/4755/files/control_system_engineering_book_free_download.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_off0000ae66.bin
28374ec1be09e1ad58d52dc56f7d701411f1afe8ec9b63a0c2a31b9c031cb52d
pdf-font-stream PDF embedded font (sfnt) at offset 0xAE66 5092 bytes
font_01_sfnt_off0000bf85.bin
c572c341e0bf67451a6615def647c68a2ee280c71f3e8d75782236d225d60e9a
pdf-font-stream PDF embedded font (sfnt) at offset 0xBF85 15308 bytes