Malicious PDF — malware analysis report

Static analysis result for SHA-256 b32a9bb675462864…

MALICIOUS

PDF

55.5 KB Created: 2020-07-31 22:17:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51050e8f12a578626950e166441c1455 SHA-1: 0f76692e1a47bd85ac7f69bda6107ff9171a21a1 SHA-256: b32a9bb6754628643e90273b2b9b044d699f4bc3fdd67ff6367fbcedc5bcf943
128 Risk Score

Malware Insights

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

The PDF file contains embedded links, one of which, 'https://ttraff.cc/pify?keyword=free+church+accounting+software', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'free church accounting software' and lists multiple PDF links, suggesting a lure to a link farm. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the malicious nature of the redirector.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=free+church+accounting+software
    • http://files.airlinepilotservice.com/uploads/1/3/2/8/132814826/d48539f0d96e5.pdf
    • http://files.recoveryhumanface.org/uploads/1/3/2/7/132740445/tidiwojuga.pdf
    • http://files.evictory108.com/uploads/1/3/1/3/131381900/zimovibaxotozu.pdf
    • https://cdn.shopify.com/s/files/1/0429/0389/6230/files/lifevurizetijob.pdf
    • https://cdn.shopify.com/s/files/1/0429/9689/1807/files/tumateremejew.pdf
    • https://cdn.shopify.com/s/files/1/0437/6687/4269/files/jinofatikogigolu.pdf
    • https://cdn.shopify.com/s/files/1/0429/9204/2137/files/zapilifipax.pdf
    • https://cdn.shopify.com/s/files/1/0431/2471/9773/files/sowadal.pdf
    • https://cdn.shopify.com/s/files/1/0437/4098/7543/files/95800971430.pdf
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/sepila.pdf
    • https://cdn.shopify.com/s/files/1/0433/5009/8085/files/xezifoleragozalupo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5498/0505/files/sitokufujajunitunok.pdf
    • https://cdn.shopify.com/s/files/1/0431/2553/8973/files/80438099994.pdf
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/vubisijiferawefosoxaxapaz.pdf
    • https://cdn.shopify.com/s/files/1/0436/6978/2693/files/tabafizawedoj.pdf
    • https://cdn.shopify.com/s/files/1/0435/5850/2563/files/tetivitusugewilale.pdf
    • https://cdn.shopify.com/s/files/1/0435/5080/2081/files/fajuzuxujetofaderesakonab.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_off00009bea.bin
8fdcc4f7d38eb2183460408f41b10a3c9d21c368cc5f2b4e1cd889587fcf4e48
pdf-font-stream PDF embedded font (sfnt) at offset 0x9BEA 5160 bytes
font_01_sfnt_off0000ad8a.bin
50dc10694f9219bf5cf34e82c9056f8bcb717399bccc85daa700c61d8b1295b5
pdf-font-stream PDF embedded font (sfnt) at offset 0xAD8A 10332 bytes