Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eae4c136445d526…

MALICIOUS

PDF

44.0 KB Created: 2020-08-08 14:46:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91f5a7a847c794d38c64cb01c988c975 SHA-1: 4c80085f81a52cbbc91bd782c7c5f8b6fe08160c SHA-256: 8eae4c136445d5268408860d20343079ff7cc36d16eef6352b04a65fd0f7d229
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 text that appears to be a lure related to 'green label singapore pdf'. The primary malicious URL, https://ttraff.cc/pify?keyword=green+label+singapore+pdf, is likely used to redirect the user to a further malicious destination. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=green+label+singapore+pdf
    • http://duvikebo.tableandelights.com/uploads/1/3/0/7/130775162/4019979.pdf
    • http://files.kevinseanoconnell.com/uploads/1/3/1/3/131384173/gezunin.pdf
    • http://files.spacecoastal-anon.org/uploads/1/3/1/4/131437319/8628607.pdf
    • http://files.partytokyovip.com/uploads/1/3/0/7/130775639/lotojategukagisiko.pdf
    • https://cdn.shopify.com/s/files/1/0434/8434/8569/files/76179030131.pdf
    • https://cdn.shopify.com/s/files/1/0433/9276/2017/files/luxisuwawox.pdf
    • https://cdn.shopify.com/s/files/1/0433/4721/4486/files/sosigelotazexosi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7371/5880/files/1st_year_all_books.pdf
    • https://cdn.shopify.com/s/files/1/0431/5411/2672/files/sonijorukonije.pdf
    • https://cdn.shopify.com/s/files/1/0428/3020/0991/files/bonanitelirigir.pdf
    • https://cdn.shopify.com/s/files/1/0427/7082/5382/files/definicion_de_gastritis_cronica.pdf
    • https://cdn.shopify.com/s/files/1/0433/3142/0319/files/fividesoligelatelukabik.pdf
    • https://cdn.shopify.com/s/files/1/0438/4981/0080/files/91428115041.pdf
    • https://cdn.shopify.com/s/files/1/0440/0496/6565/files/97145221027.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_off000061f6.bin
b91153a84dd4c9e02df246035ecabd63342a86e115569e8920ea1c1d70a16d04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61F6 5380 bytes
font_01_sfnt_off0000744b.bin
89f2713476e967d5d6d4b12983998d66db470f3855478fc574e3688d1baa30da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x744B 15116 bytes

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