Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0d3ac50b1cb6f86…

MALICIOUS

PDF

43.4 KB Created: 2020-09-10 07:53:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 630e5e5e093e4d0a05aa57ed93dbcdd1 SHA-1: 7798bf69faf58a5896738b774898a39771c97db6 SHA-256: a0d3ac50b1cb6f86a8b6a5443f607479b1f49c656c2e5ff763d3fcbc440a87ff
128 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and numerous external links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a car model and the tool used to generate the PDF, suggesting a lure. The primary attack pattern involves redirecting the user to malicious infrastructure via these links.

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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.club/pify?keyword=2015+chevy+spark+manual+transmission
    • http://files.bridgetotransformation.com/uploads/1/3/1/3/131398517/f2b34536a388be3.pdf
    • http://files.sunsethoa.com/uploads/1/3/0/7/130775980/7060456.pdf
    • http://files.rumahbudayaindonesia.org/uploads/1/3/0/7/130739227/wupipefegulefumenisi.pdf
    • http://repupol.creativegeniuswithin.com/uploads/1/3/0/8/130874030/1345278.pdf
    • http://files.bingsdsm.com/uploads/1/3/0/7/130739463/zitelanax-wemex.pdf
    • http://monale.swanleeartdesign.com/uploads/1/3/0/8/130813533/gerekixilomiv-dajubilojej-kubuzo.pdf
    • https://static.usrfiles.com/ugd/625844_c54012b6d5b24dbbaed0ec78025c89b3.pdf
    • https://cdn.shopify.com/s/files/1/0437/7464/0286/files/58735665462.pdf
    • https://cdn.shopify.com/s/files/1/0437/6795/5610/files/ruby_subtract_arrays.pdf
    • https://cdn.shopify.com/s/files/1/0431/7836/0987/files/jde_orchestrator_guide.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_off00005c98.bin
74a08db61aa3ef4ec31ace27958177379073c169c7e8791d9dbeb791cc2f3817		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C98 5756 bytes
font_01_sfnt_off00007019.bin
887de7fd2f246ac594d8b87f91e4c1c3a3026c2a9fe392681c1e40ceabc26006		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7019 15088 bytes

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