Malicious PDF — malware analysis report

Static analysis result for SHA-256 d34dad30181b46d9…

MALICIOUS

PDF

47.1 KB Created: 2020-08-19 21:21:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a9300776a6e3b0e38693c69aae3ed25 SHA-1: b845aae5bbd8c05cbcee1a64402fd4aa94a0fa7a SHA-256: d34dad30181b46d944846b790e2d03caf202d59e635053e5f76d61272eec5db1
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=appvalley+vip+ipa'. Additionally, it exhibits a PDF link farm heuristic, indicating a large number of external links, with the primary one being 'https://cdn.shopify.com/s/files/1/0433/2693/1099/files/pdf_files_download_sample.pdf'. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the intent to redirect users to potentially harmful 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.cc/pify?keyword=appvalley+vip+ipa
    • http://files.bodytech-gym.com/uploads/1/3/2/8/132816165/6715c3956.pdf
    • http://malog.lesherinstrumentalmusic.com/uploads/1/3/1/4/131438304/wafaladorawebafoluzu.pdf
    • http://files.eightgates.co.uk/uploads/1/3/1/3/131398140/3572099.pdf
    • https://cdn.shopify.com/s/files/1/0433/2693/1099/files/pdf_files_download_sample.pdf
    • https://cdn.shopify.com/s/files/1/0434/7559/9524/files/67001507255.pdf
    • https://cdn.shopify.com/s/files/1/0437/6988/8920/files/fizebofixozamek.pdf
    • https://cdn.shopify.com/s/files/1/0433/3414/0056/files/7421993796.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tobilefoseparavako.pdf
    • https://cdn.shopify.com/s/files/1/0446/9719/0556/files/smoking_causes_lung_cancer.pdf
    • https://cdn.shopify.com/s/files/1/0438/0311/5682/files/chagas_sobrinho_depois_da_muralha_playback.pdf
    • https://cdn.shopify.com/s/files/1/0435/9431/7981/files/busifafelu.pdf
    • https://cdn.shopify.com/s/files/1/0436/9743/8875/files/31312519051.pdf
    • https://cdn.shopify.com/s/files/1/0429/2270/5055/files/zezomovuz.pdf
    • https://cdn.shopify.com/s/files/1/0428/3524/7271/files/92006903900.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_off00007c22.bin
bc84f20e8fecaeab1c264d66de99b98d65989e5b04bb556e73ec4d9c3908affd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C22 4688 bytes
font_01_sfnt_off00008c3a.bin
d2b6fc6c45b5695d3c443449b48bfabd98daa1d8e1b7eed68a29eb7fb1f42fbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C3A 10360 bytes

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