Malicious PDF — malware analysis report

Static analysis result for SHA-256 330495b9d45e05db…

MALICIOUS

PDF

61.4 KB Created: 2020-08-15 01:27:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83b8712b50888a019727644fbf9fd7f1 SHA-1: 6fc349d7c224f1bae43dd5ce4a181cefec014ecf SHA-256: 330495b9d45e05db53ff845d2501f6acc8eb920c65ce7c844908e5afc5c9d856
120 Risk Score

Malware Insights

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

The PDF file contains multiple links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be the same as the malicious redirector. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for further exploitation or credential harvesting.

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=rambabu+audio+song
    • http://kuzuv.annamariemclachlan.com/uploads/1/3/2/7/132740405/8114600.pdf
    • http://kafeda.indianlakestables.com/uploads/1/3/0/8/130874429/nitijaka-gavazo.pdf
    • http://kosis.westerhamu3a.org/uploads/1/3/1/0/131070147/3560885.pdf
    • https://cdn.shopify.com/s/files/1/0429/2067/3433/files/xotogizobu.pdf
    • https://cdn.shopify.com/s/files/1/0440/2089/1798/files/tumolikejapowipipedama.pdf
    • https://cdn.shopify.com/s/files/1/0428/7702/6463/files/busoterugumavisebuba.pdf
    • https://cdn.shopify.com/s/files/1/0428/9147/7159/files/62399905169.pdf
    • https://cdn.shopify.com/s/files/1/0428/2118/9788/files/98221454913.pdf
    • https://cdn.shopify.com/s/files/1/0434/1720/6946/files/1580531416.pdf
    • https://cdn.shopify.com/s/files/1/0432/1548/7135/files/6414886795.pdf
    • https://cdn.shopify.com/s/files/1/0434/2782/3765/files/34794760581.pdf
    • https://cdn.shopify.com/s/files/1/0437/7785/1553/files/ziruj.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/teoria_da_argumentao_jurdica.pdf
    • https://cdn.shopify.com/s/files/1/0431/9005/9176/files/burivavunireli.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_off0000a795.bin
6383368106fa51044a7d1b6e1c4d2532837d47db707ce19ce13424ecb6c47cbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA795 5164 bytes
font_01_sfnt_off0000b915.bin
e13a8ef0fbf154fdd3df865948e357e3c9523f184d4efec3ee743db78644a949		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB915 15544 bytes

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