Malicious PDF — malware analysis report

Static analysis result for SHA-256 413d75757bbf3e1d…

MALICIOUS

PDF

35.8 KB Created: 2020-08-31 12:47:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f15b59558a07d63e0ef57d8c91b85af SHA-1: 981aa71bc01bc0e92a8787b4689ab69d2207a7d7 SHA-256: 413d75757bbf3e1dfe899d3eeb535e80a59600fdcf51a1f978c7b1adec7b1094
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one heuristic specifically identifying a link to a known malicious redirector. The document body, though heavily obfuscated, also contains the malicious URL. This suggests the primary goal is to lure the user to a malicious site, likely for further exploitation or credential harvesting. The presence of multiple Shopify links indicates a potential attempt to blend malicious content with seemingly benign resources.

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/wix?keyword=kinectcam.ax+%252842+kb%2529
    • https://cdn.shopify.com/s/files/1/0431/5086/8646/files/97111269686.pdf
    • https://cdn.shopify.com/s/files/1/0429/4197/2646/files/60691129323.pdf
    • https://cdn.shopify.com/s/files/1/0434/0819/5736/files/metabolic_aftershock_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0435/9657/8979/files/99187913730.pdf
    • https://cdn.shopify.com/s/files/1/0434/2182/7222/files/fejeluzefekavedudubipid.pdf
    • https://cdn.shopify.com/s/files/1/0437/1228/2789/files/44273994439.pdf
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/vupexetiruzejol.pdf
    • https://cdn.shopify.com/s/files/1/0437/6795/5610/files/tulja_bhavani_stotra_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/7442/7809/files/61107727468.pdf
    • https://static.usrfiles.com/ugd/ade4e6_fdff9db4f89a479a98a2e4020480c0b7.pdf
    • https://static.usrfiles.com/ugd/6c032c_df3d4e5500e9482ea3558a984902bb75.pdf
    • https://static.usrfiles.com/ugd/b8c837_9c0dfbb803454a58ae86d92512682165.pdf
    • https://static.usrfiles.com/ugd/91e123_8e5c4eff101c42fe94eae9b39f6de3d0.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_off00004dd9.bin
3422b09f07100d8d61dc37665aa664417ea020faba7d60d80417e4e81deec3f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DD9 5284 bytes
font_01_sfnt_off00005fef.bin
a3cfcd4a5aa7479511e8a8371e4bcfa2df2f7f34d80daa535250e0bec848880e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FEF 10292 bytes

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