Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4ecb26819341501…

MALICIOUS

PDF

63.3 KB Created: 2020-08-03 12:06:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5094fe7666cd07fca5639c6dd6b901e5 SHA-1: 0192972326cf986eadc328dd4ab9d13155632a54 SHA-256: a4ecb26819341501abfb9184db206f2da2d7c3c078b5e8927b984051e11cf463
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=candomble+bem+explicado+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The PDF also exhibits characteristics of a link farm, with numerous external links, further supporting a malicious redirection scheme.

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=candomble+bem+explicado+pdf
    • http://files.thevictorianpetal.com/uploads/1/3/0/8/130873804/e611ab54455843.pdf
    • http://files.charleslpearson.net/uploads/1/3/1/8/131871501/1553476.pdf
    • http://files.supernovaexotics.com/uploads/1/3/1/6/131607010/savajejamotowujagebi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3901/4562/files/black_and_decker_18v_weed_eater.pdf
    • https://cdn.shopify.com/s/files/1/0430/3382/1347/files/bowanugoturagutiw.pdf
    • https://cdn.shopify.com/s/files/1/0430/4021/1105/files/lorafekosuxep.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3106/files/dasemeduvazuretinujexapuk.pdf
    • https://cdn.shopify.com/s/files/1/0435/5971/4971/files/wiriderafuzi.pdf
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/cz_75_armorers_manual.pdf
    • https://cdn.shopify.com/s/files/1/0440/6879/8614/files/27179426571.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30547733638.pdf
    • https://cdn.shopify.com/s/files/1/0431/3628/6877/files/58126769476.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_off0000bb34.bin
dbf526914a1f708597283a8de7d95ef70efbf7f3a2e24ddd3592ca810e6afb6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB34 5140 bytes
font_01_sfnt_off0000cca3.bin
cd232ed4ae60d64210461a1eb463477f990ca7698dc53ef572a01f4d18635785		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA3 10420 bytes

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