Malicious PDF — malware analysis report

Static analysis result for SHA-256 89245ebc76bd9b17…

MALICIOUS

PDF

115.0 KB Created: 2020-08-06 03:13:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 805937b0773b39b9ea58d0a2ce75caa5 SHA-1: 50fc979dbfa7207faf723eccd1444af02ceab03b SHA-256: 89245ebc76bd9b1790d477d45f9d61c61b9a6edf6010d2adab288e443b0394e9
120 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link pointing to 'ttraff.ru'. This indicates a phishing or redirection attempt. The document body, though heavily obfuscated, contains the same URL, reinforcing its malicious intent. The presence of numerous external links, many hosted on Shopify, suggests a link farm used for SEO poisoning or distributing malicious content.

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.ru/pify?keyword=caballo+de+troya+1+pdf+online
    • http://files.dsmtoolworks.com/uploads/1/3/1/0/131070678/6e54ea9.pdf
    • http://mipefed.bethadice.com/uploads/1/3/0/8/130814124/eca5dcdba3830.pdf
    • http://files.gascityformeremployees.com/uploads/1/3/1/3/131378771/8214463.pdf
    • http://files.kenairiverfoundation.org/uploads/1/3/1/4/131453034/simivutefavazu_rutame_jatobu.pdf
    • http://files.michaelsrockyriver.com/uploads/1/3/2/8/132816042/9130266.pdf
    • https://cdn.shopify.com/s/files/1/0430/7949/9940/files/2754834367.pdf
    • https://cdn.shopify.com/s/files/1/0433/1392/2206/files/vevixozunemu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6819/4978/files/xoduwixexos.pdf
    • https://cdn.shopify.com/s/files/1/0433/3400/8987/files/jekowowepafiba.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/f0_9f_a5_b4.pdf
    • https://cdn.shopify.com/s/files/1/0431/9110/7742/files/xixopu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2745/6419/files/aorus_app_center.pdf
    • https://cdn.shopify.com/s/files/1/0431/6279/6186/files/comment_relier_plusieurs_en_un_seul.pdf
    • https://cdn.shopify.com/s/files/1/0428/2767/7852/files/mewolituso.pdf
    • https://cdn.shopify.com/s/files/1/0436/9140/9558/files/75373331918.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_off00018518.bin
88fd831814befd227c24cbc633527c6cd5e32dce370dbbd0f63654ca1549c50c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18518 5056 bytes
font_01_sfnt_off0001965d.bin
a87c64453f25967f6f258e63f3bf1febac1a3bb3fa312f2c2ab8ff36bfbd17e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1965D 11932 bytes

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