Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfb8a7e140fb9152…

MALICIOUS

PDF

50.6 KB Created: 2020-08-22 05:22:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 658aeb3dbe216a3b1b86f0412c04e5e6 SHA-1: e9d365db341b8b7c8fe6b4f0500bdd75ecde7ba9 SHA-256: cfb8a7e140fb91520edd76aacd3205b5eddfbdf7a49486f9273ded21d9db6b35
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=demo+warlock+dps+guide'. The document body, though heavily obfuscated, contains this URL and appears to be a lure for a 'demo warlock dps guide'. The file also contains a large number of embedded links to Shopify-hosted PDFs, indicating a potential link farm or distribution mechanism.

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.com/pify?keyword=demo+warlock+dps+guide
    • http://files.intelligentwoundcare.com/uploads/1/3/1/3/131380889/43ff6a3e58e.pdf
    • http://debiwopav.weddingcarhireauckland.co.nz/uploads/1/3/0/8/130874012/ripopigikosum.pdf
    • http://files.athospress.com/uploads/1/3/1/1/131164424/zojevutofe.pdf
    • http://files.birdingaroundnyc.com/uploads/1/3/1/0/131070842/gawelorojat-busipexibovo.pdf
    • http://files.audiostak.com/uploads/1/3/2/8/132814097/49129839d9ac13.pdf
    • https://cdn.shopify.com/s/files/1/0434/3834/2311/files/habitos_alimentarios_libros.pdf
    • https://cdn.shopify.com/s/files/1/0438/9024/5787/files/98378253685.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xomuburisuxenogiduta.pdf
    • https://cdn.shopify.com/s/files/1/0433/4164/3928/files/wepabuvazujebopufopexo.pdf
    • https://cdn.shopify.com/s/files/1/0430/9359/0177/files/43011682037.pdf
    • https://cdn.shopify.com/s/files/1/0436/1089/8595/files/79306130000.pdf
    • https://cdn.shopify.com/s/files/1/0434/3798/1852/files/analytical_method_validation_protocol.pdf
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/57936892783.pdf
    • https://cdn.shopify.com/s/files/1/0433/0110/9920/files/how_to_annotate_notability.pdf
    • https://cdn.shopify.com/s/files/1/0432/4874/6651/files/fekipeverotesasa.pdf
    • https://cdn.shopify.com/s/files/1/0429/4675/6774/files/xatibogewor.pdf
    • https://cdn.shopify.com/s/files/1/0440/5064/5157/files/spring_boot_mysql_jdbctemplate.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_off0000795d.bin
019ae317c1ae45cf80e7afb453b05714fcc380a874e5f543d71113ea1553695c
pdf-font-stream PDF embedded font (sfnt) at offset 0x795D 3396 bytes
font_01_sfnt_off00008584.bin
b4901d8d07d93488f7aca5abd17190982527d8e0910f8216a95591ed6638b26d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8584 5548 bytes
font_02_sfnt_off00009864.bin
a33a274372da7140111ff598ddcf17e4596395e0308337b957327abf4e0f232d
pdf-font-stream PDF embedded font (sfnt) at offset 0x9864 10796 bytes