Malicious PDF — malware analysis report

Static analysis result for SHA-256 d987dbf501d52f57…

MALICIOUS

PDF

52.0 KB Created: 2020-07-29 19:36:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 922e7d3a00309fb80d2e4a659c634bdc SHA-1: 6911160d3517f6edddb4908ec42340520e889b59 SHA-256: d987dbf501d52f577962e6faf71c8d9d23b372b86d6bb5e96807fa9eebd3177c
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. This redirector leads to a link farm of other PDFs, suggesting a campaign to drive traffic to malicious content. The document body text appears to be obfuscated or corrupted, making it difficult to ascertain the exact lure, but the presence of advertisement-related keywords and the redirector strongly indicate a phishing or scam attempt.

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.com/pify?keyword=msrtc+advertisement+2+2020+pdf
    • http://files.topshedidaho.com/uploads/1/3/0/7/130738534/fojuz.pdf
    • http://files.gusandrubys.com/uploads/1/3/2/6/132695492/6082968.pdf
    • http://files.busterbledsoeband.com/uploads/1/3/1/4/131454345/1938701.pdf
    • https://cdn.shopify.com/s/files/1/0438/4122/4861/files/10007179082.pdf
    • https://cdn.shopify.com/s/files/1/0440/1466/5878/files/sonikekusojapagavipigul.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46946939033.pdf
    • https://cdn.shopify.com/s/files/1/0431/2684/9700/files/noxadavobizilerama.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58097506778.pdf
    • https://cdn.shopify.com/s/files/1/0435/7190/4673/files/94016922838.pdf
    • https://cdn.shopify.com/s/files/1/0430/8844/5589/files/36985608461.pdf
    • https://cdn.shopify.com/s/files/1/0431/0899/1142/files/puwapegumejo.pdf
    • https://cdn.shopify.com/s/files/1/0434/3146/1016/files/56438862077.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4033/files/zukew.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/bomotamenuzejiluxufun.pdf
    • https://cdn.shopify.com/s/files/1/0432/0192/1184/files/39691762511.pdf
    • https://cdn.shopify.com/s/files/1/0432/8348/0736/files/purepafilotozumaragite.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073f6.bin
d6abb243d5ec7d5fc9bb9912177b61f16aa9b8e56576e25ad073172a42b83b64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73F6 5288 bytes
font_01_sfnt_off000085d7.bin
a8ba320a0ac8a73a5a8cc2c47ba30bd151ec5f51af4d5ac0b9daf85eaa8f1301		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85D7 1936 bytes
font_02_sfnt_off00008f1c.bin
6b10a1a4e12dc19ef0a5f51979beb95e1bf98dcbd86dbe792ed2b4db4afce22b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F1C 10144 bytes
font_03_sfnt_off0000b210.bin
0f14a6936955bdee084f1ba76b134a2047337bc61d6a7ac48b42ebeae6745230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB210 4180 bytes

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