Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4fdb1e2c95e1931…

MALICIOUS

PDF

53.6 KB Created: 2020-08-15 06:01:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58d61c9e9d4d8f3ebc3da2c0c0147ead SHA-1: 615619e625eb623c81b533af2f4d3573f6f8eee0 SHA-256: e4fdb1e2c95e19317523ac10a9ed58ffa1d7b6f196ee9d4b73e212fbfe332b04
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic firing indicating it's a malicious redirector. The primary URL, 'https://ttraff.ru/pify?keyword=dublin+ireland+map+pdf', is a clear indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site. The document body, though heavily obfuscated, contains references to this URL. The presence of a 'LOLBin run command' heuristic suggests potential execution of scripts or commands, further supporting a malicious delivery mechanism.

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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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=dublin+ireland+map+pdf
    • http://files.nakaishatolbertbanks.com/uploads/1/3/2/7/132711947/4d11afa.pdf
    • https://cdn.shopify.com/s/files/1/0434/3165/7638/files/pesiveboxopitan.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fapodepemiretewuroraga.pdf
    • https://cdn.shopify.com/s/files/1/0431/2157/4049/files/joint_of_normal_distribution.pdf
    • https://cdn.shopify.com/s/files/1/0429/8414/5049/files/curl_multiple_headers.pdf
    • https://cdn.shopify.com/s/files/1/0435/8258/7037/files/azure_data_studio_notebook_to.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vemuvuferakodumi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/fabuzasewibisegole.pdf
    • https://cdn.shopify.com/s/files/1/0435/2137/6410/files/8028389218.pdf
    • https://cdn.shopify.com/s/files/1/0440/7522/1157/files/95754132213.pdf
    • https://cdn.shopify.com/s/files/1/0436/5592/1822/files/89144954641.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_off00006620.bin
d41dd2a7916fb5309eaf9507cdc7847779dfc0542ff90758a53adffd8fba454d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6620 5588 bytes
font_01_sfnt_off000079a9.bin
f9b6fe35595b1c163d581b03762fdd630b40bf7492575ea99d9b913d01350c13
pdf-font-stream PDF embedded font (sfnt) at offset 0x79A9 5148 bytes
font_02_sfnt_off00008b0b.bin
07f8d6f3fd94708d0ec258b65c738064b0f8a89b5eda2c7649f42e533bc0a1bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B0B 11408 bytes
font_03_sfnt_off0000b23d.bin
a0f0f1354c9ff62f90f9933709b4b0b28a4f7ac2a8b42ca1e7e9e8d6581bed15
pdf-font-stream PDF embedded font (sfnt) at offset 0xB23D 16612 bytes