Malicious PDF — malware analysis report

Static analysis result for SHA-256 25ba5e692f2d779b…

MALICIOUS

PDF

40.6 KB Created: 2020-08-03 19:16:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63d726bb9b4452fa79f3a78f615c141c SHA-1: 2be68ec16b38da61430c38587690c9c941a4b948 SHA-256: 25ba5e692f2d779bb43e5119435bef9adb832d151640ee28ec0abf129e39f8e2
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'put and call option agreement' and includes the malicious URL. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or redirection strategy to obscure the ultimate destination. No scripts were extracted from this sample.

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=put+and+call+option+agreement+pdf
    • http://files.exxcelpainting.com/uploads/1/3/0/8/130873851/bimizifemofezog_pirilegera_jazojit_guzifudofobel.pdf
    • http://files.circleswithmyfeet.com/uploads/1/3/1/3/131380263/rinafegejalo-gudabowov-julav.pdf
    • http://files.historichavanaillinois.com/uploads/1/3/0/8/130874284/kafuretuden.pdf
    • http://files.2028uae.com/uploads/1/3/2/3/132303312/7164322.pdf
    • http://files.joyjech.com/uploads/1/3/1/1/131163943/8084533.pdf
    • https://cdn.shopify.com/s/files/1/0428/4448/7836/files/86863360661.pdf
    • https://cdn.shopify.com/s/files/1/0428/7676/4327/files/voxaramunejikorafadoto.pdf
    • https://cdn.shopify.com/s/files/1/0428/0408/4899/files/zupuxinukof.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97072231683.pdf
    • https://cdn.shopify.com/s/files/1/0428/0126/6851/files/14087044087.pdf
    • https://cdn.shopify.com/s/files/1/0429/8060/6111/files/50287800235.pdf
    • https://cdn.shopify.com/s/files/1/0428/8613/5961/files/33576075592.pdf
    • https://cdn.shopify.com/s/files/1/0433/8712/5927/files/24317713934.pdf
    • https://cdn.shopify.com/s/files/1/0429/5183/5801/files/fotojefobopudabugo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5389/1232/files/pefolirasajuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/6309/1112/files/roxudoropere.pdf
    • https://cdn.shopify.com/s/files/1/0430/7494/5184/files/vadanupuzilekofezurimazel.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_off000061b2.bin
213dbb5bcfd06c36ebfaa5ff5537242361c1bcb633829e8cc24182bb0196d158		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61B2 5296 bytes
font_01_sfnt_off000073a4.bin
06ae2aea470c0b6af98055b973d447236d8b638286effe95ff85e73c050155b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73A4 9908 bytes

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