Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9e2f7c930df2c5a…

MALICIOUS

PDF

42.4 KB Created: 2020-08-10 00:57:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6966b76cf741b50ae1664ecaa24d9664 SHA-1: c73dbcb2c4b29e3464ea014a11fa1f4be5c6076e SHA-256: a9e2f7c930df2c5abd4d81b94f03bc53929beb03b9d8003ee280d96add686fcd
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a primary link pointing to a known malicious redirector. The document body text, though heavily obfuscated, includes the phrase 'Annexure e1 hssc download pdf' and the malicious URL, suggesting a lure to trick users into downloading further malicious content. The presence of a link farm further supports the malicious intent.

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/pify?keyword=annexure+e1+hssc+download+pdf
    • http://files.equityestates.org/uploads/1/3/0/8/130814192/f579e1a.pdf
    • http://files.appelfamilydairy.com/uploads/1/3/2/6/132696210/fc43d9b54521b08.pdf
    • http://files.armentroutphoto.com/uploads/1/3/2/6/132682585/5200370.pdf
    • http://niwew.sehlstudios.com/uploads/1/3/1/0/131069839/vuxexusixivolafilin.pdf
    • https://cdn.shopify.com/s/files/1/0429/1470/9663/files/76992465283.pdf
    • https://cdn.shopify.com/s/files/1/0430/5692/2777/files/60376677109.pdf
    • https://cdn.shopify.com/s/files/1/0430/3483/7149/files/gaduguxizab.pdf
    • https://cdn.shopify.com/s/files/1/0428/4507/7671/files/age_definition_sociology.pdf
    • https://cdn.shopify.com/s/files/1/0431/8039/2609/files/metallica_songs_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0436/6319/6310/files/muzopapogijerijonixadu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4145/5254/files/5648969571.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niriliruvurufuwupaku.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46150969179.pdf
    • https://cdn.shopify.com/s/files/1/0429/2352/4259/files/dewoxes.pdf
    • https://cdn.shopify.com/s/files/1/0429/5468/6617/files/10576057089.pdf
    • https://cdn.shopify.com/s/files/1/0430/7537/1162/files/93245744168.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_off00005b73.bin
2537ec67d7a993f02f65053aed14373321cce69f72d2143f3ed6bc20a3fcbae1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B73 5196 bytes
font_01_sfnt_off00006d23.bin
93d09635bd91c6284bfe9983cf404fb167991ea9e70f3ca29454179b828d3543		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D23 9900 bytes
font_02_sfnt_off00008ec9.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC9 4324 bytes

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