Malicious PDF — malware analysis report

Static analysis result for SHA-256 58e244d437a09711…

MALICIOUS

PDF

40.1 KB Created: 2020-09-02 17:54:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64f45191f1aabf2507e9e16250d0ae1e SHA-1: eca99d77d0cee8d1b62dfdd2e3303dd6364b96c8 SHA-256: 58e244d437a097119651d575cbbb89f03f11189393074b1d1f87ab0611ff2b14
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=pulse+width+modulation+lab+manual'. This indicates the document's primary purpose is to redirect users to a potentially harmful site. The PDF also contains a link farm, suggesting an attempt to manipulate search engine results or distribute content broadly. No scripts were extracted, but the presence of a malicious URL is sufficient to classify the attack pattern.

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/wix?keyword=pulse+width+modulation+lab+manual
    • https://cdn.shopify.com/s/files/1/0432/4065/2960/files/local_studies_about_absenteeism_in_the_philippines.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7381/files/18890008661.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7415/files/wigeduzevisixelusolo.pdf
    • https://cdn.shopify.com/s/files/1/0440/6290/0374/files/10132956691.pdf
    • https://static.usrfiles.com/ugd/e3c460_66122e2730a8406abd85c84bfb87e095.pdf
    • https://static.usrfiles.com/ugd/b8c837_695ba211d7f043d898ec67f7cbd7a68f.pdf
    • https://static.usrfiles.com/ugd/b8c837_55c95d7425094209b1bd0b0057209363.pdf
    • https://static.usrfiles.com/ugd/5e81b9_0d0fe9fbf90f4854a706272e92d1ddc3.pdf
    • https://static.usrfiles.com/ugd/c75f60_e26cc958053a44eaa7a69ea5dc1a876e.pdf
    • https://static.usrfiles.com/ugd/b8c837_23fd4484a92a4616b0e93462d91a9c37.pdf
    • https://static.usrfiles.com/ugd/b8c837_382e334395aa4a4f8bcb044adaced5c0.pdf
    • https://static.usrfiles.com/ugd/b8c837_a1c8e0aa06f8420399027d1e12471151.pdf
    • https://cdn.shopify.com/s/files/1/0431/1279/2221/files/aditivos_alimentarios_colorantes.pdf
    • https://cdn.shopify.com/s/files/1/0429/0691/0887/files/piwusaserajepesis.pdf
    • https://cdn.shopify.com/s/files/1/0439/8632/1566/files/592785413.pdf
    • https://cdn.shopify.com/s/files/1/0433/3672/8735/files/zuginulak.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_off00006024.bin
18a17b681ca0b6aa3f891cc1fc61c584b3735de177db225d6551a0375add9980		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6024 5204 bytes
font_01_sfnt_off000071bb.bin
9cef46565368b07bb725d43ffe2efa426e77f010a75737e54fc1feacb2204405		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71BB 9920 bytes

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