Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0f34b0b293942ec…

MALICIOUS

PDF

39.0 KB Created: 2020-08-20 02:15:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b26701dee18aa9de44a3192b71f636cb SHA-1: 5e7971fef5d2b3a848f94d3ec1c5a58df5d7e74a SHA-256: f0f34b0b293942ec3f8b15f79a38453c4cffc7b95286454f30290d0f410b5935
128 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous links to other PDF documents, predominantly hosted on Shopify. One of these links, however, directs to a known malicious redirector (ttraff.ru), suggesting a malicious intent to redirect users to harmful content. The presence of a visual download button lure further supports the malicious workflow. The document body contains obfuscated text and the malicious URL, reinforcing the findings.

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.ru/pify?keyword=meet+me+chat++for+pc
    • http://files.mycountyparks.org/uploads/1/3/1/4/131406749/75599c.pdf
    • https://cdn.shopify.com/s/files/1/0440/8947/5237/files/21147169505.pdf
    • https://cdn.shopify.com/s/files/1/0432/0568/9499/files/need_for_speed_underground_3.pdf
    • https://cdn.shopify.com/s/files/1/0430/6527/8625/files/3502234923.pdf
    • https://cdn.shopify.com/s/files/1/0429/7077/5706/files/zekibedu.pdf
    • https://cdn.shopify.com/s/files/1/0428/6568/8743/files/bonowabetexe.pdf
    • https://cdn.shopify.com/s/files/1/0436/9108/1882/files/google_sheets_templates_personal_budget.pdf
    • https://cdn.shopify.com/s/files/1/0432/7781/1867/files/70507330049.pdf
    • https://cdn.shopify.com/s/files/1/0432/6447/5304/files/bagadozujudarikori.pdf
    • https://cdn.shopify.com/s/files/1/0431/4133/3147/files/29493858872.pdf
    • https://cdn.shopify.com/s/files/1/0429/9105/9097/files/xupezezapejimojelutid.pdf
    • https://cdn.shopify.com/s/files/1/0449/0684/0231/files/29514774350.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_off00005c13.bin
4cd149d2a1780e28bcb3917b32960512e54a4947dd2d15238dee6d38a9f93169		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C13 5048 bytes
font_01_sfnt_off00006d27.bin
b7d3f2d421d08da80f516002a74975d8f1582be41fc06b943ed643dd8f26951d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D27 10044 bytes

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