Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b6ed99d1cba7afd…

MALICIOUS

PDF

55.5 KB Created: 2020-08-14 00:08:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f458bcd8e2c9e8a41cc2e28376f059f SHA-1: 2e3cb5bf2c2808cfd24a3d074166153420a58890 SHA-256: 4b6ed99d1cba7afd5aff4240964e8090688fb492f707b51b250ee3e115686aeb
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains a reconstructed URL that appears to be the primary lure. This suggests a phishing attempt to redirect users to 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=blanchard+situational+leadership+pdf
    • http://files.cgapak.org/uploads/1/3/0/7/130740211/3dc2a995cbbd.pdf
    • http://files.annbeurdesign.com/uploads/1/3/0/8/130874655/1073d8384471d0.pdf
    • http://files.andreas-skincare-bodytherapy.com/uploads/1/3/2/6/132681194/dd8daf3.pdf
    • http://files.csi1000.us/uploads/1/3/2/3/132303081/dfff4c9359.pdf
    • http://files.wanderingindarkness.com/uploads/1/3/0/7/130775592/9363550.pdf
    • https://cdn.shopify.com/s/files/1/0430/7825/4753/files/44022769511.pdf
    • https://cdn.shopify.com/s/files/1/0440/2266/1278/files/kesavukipakixip.pdf
    • https://cdn.shopify.com/s/files/1/0428/1637/2892/files/gazovigu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3901/4562/files/lojefoguwifuvimitet.pdf
    • https://cdn.shopify.com/s/files/1/0441/2994/3704/files/78516859644.pdf
    • https://cdn.shopify.com/s/files/1/0436/2679/1075/files/vizajozopugadedaz.pdf
    • https://cdn.shopify.com/s/files/1/0437/8466/7297/files/89650796502.pdf
    • https://cdn.shopify.com/s/files/1/0428/6126/5062/files/bagatepaniduruledomu.pdf
    • https://cdn.shopify.com/s/files/1/0429/7090/6780/files/83332632037.pdf
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/93531384163.pdf
    • https://cdn.shopify.com/s/files/1/0450/5151/0936/files/windows_host_file_path.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008cc8.bin
0193629ec125f253dcb53c3f8c7bcb58e46efd3ff08edcb61f424797ec053d5a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CC8 5176 bytes
font_01_sfnt_off00009e4c.bin
11a081e5057fbbcd47ee521d06578d0e6ffaa8db072dcfc1e33cd84445c85d50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E4C 10596 bytes
font_02_sfnt_off0000c290.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC290 4324 bytes

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