Malicious PDF — malware analysis report

Static analysis result for SHA-256 b50a877c015421ee…

MALICIOUS

PDF

47.2 KB Created: 2020-08-02 17:51:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3eb760d9658f39206150bf0543888242 SHA-1: 02508d2e50a5d79a8b32326f78bbd8bb290c381e SHA-256: b50a877c015421eec4b73208e51e673fb24cd5c05de36e6f43debefda4a2e68e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the string 'Utilities folder mac' and the malicious URL. The PDF also exhibits characteristics of a link farm, with numerous external links, including one hosted on Shopify. The primary attack vector appears to be social engineering via a deceptive document title and a malicious link designed to redirect the user to further malicious content.

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.ru/pify?keyword=utilities+folder+mac
    • http://files.glasgoweagles.org.uk/uploads/1/3/0/7/130738933/5881980.pdf
    • http://files.andymanley.com/uploads/1/3/0/9/130969939/ranukexirugipesirow.pdf
    • http://files.choicesinfo.com/uploads/1/3/1/3/131383377/6051649.pdf
    • http://files.qecareereducation.ca/uploads/1/3/0/8/130874608/9719411.pdf
    • https://cdn.shopify.com/s/files/1/0434/0059/3557/files/87907045567.pdf
    • https://cdn.shopify.com/s/files/1/0433/0602/5128/files/82676542268.pdf
    • https://cdn.shopify.com/s/files/1/0428/7614/1731/files/5237716739.pdf
    • https://cdn.shopify.com/s/files/1/0441/2289/8584/files/zotonom.pdf
    • https://cdn.shopify.com/s/files/1/0436/8728/0790/files/39958451344.pdf
    • https://cdn.shopify.com/s/files/1/0427/8226/1415/files/46056585124.pdf
    • https://cdn.shopify.com/s/files/1/0432/8721/6293/files/95028462703.pdf
    • https://cdn.shopify.com/s/files/1/0439/5122/7048/files/94191555821.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/10773294192.pdf
    • https://cdn.shopify.com/s/files/1/0431/7492/0347/files/66491013592.pdf
    • https://cdn.shopify.com/s/files/1/0437/2958/4293/files/sugipibuj.pdf
    • https://cdn.shopify.com/s/files/1/0434/7474/7558/files/neat_scanner_driver.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46676539889.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/
    • https://cdn.shopify.com/s/files/1/0439/5122/7048/files/941915558

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f13.bin
d3622a97071f084a7047e88e531ad0153026ec25c4db486b3903f2a107aaea49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F13 4840 bytes
font_01_sfnt_off00007f81.bin
5356815df8ce277227274d120eabce3d4c2f4d803283c7dfec7119d3d5692ea8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F81 9976 bytes
font_02_sfnt_off0000a1a1.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1A1 4324 bytes

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