Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e7f09c8e94c3910…

MALICIOUS

PDF

39.6 KB Created: 2020-08-26 08:42:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5b746adb558668dbf37ae8d61477cf8 SHA-1: 45a4ddb4afed1c07f96f566a4bb4b5a3fc9e5053 SHA-256: 8e7f09c8e94c39100eb401fd5a42f0c69ceb6ed3b62ee7f868180a0b9e1d960a
148 Risk Score

Malware Insights

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

The PDF document impersonates a cloud document lure, presenting a download button that, when clicked, redirects the user to a malicious URL. The primary malicious URL identified is ttraff.com, which is known to host redirector infrastructure. The document body contains text related to 'Cnet adobe reader', suggesting a lure to trick users into downloading a fake Adobe Reader update.

Heuristics 5

  • 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.
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=cnet+adobe+reader
    • http://files.wonderpin.com/uploads/1/3/1/6/131637362/feligizibab_bikajegirob_titit_julen.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91960476686.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/letras_de_canciones_infantiles_cortas_para_preescolar.pdf
    • https://cdn.shopify.com/s/files/1/0435/0243/6518/files/mabebe.pdf
    • https://cdn.shopify.com/s/files/1/0431/3631/9645/files/lofifubisav.pdf
    • https://cdn.shopify.com/s/files/1/0432/6624/4766/files/14450971493.pdf
    • https://cdn.shopify.com/s/files/1/0431/5004/9448/files/favupaxuwepiza.pdf
    • https://cdn.shopify.com/s/files/1/0441/3086/1208/files/android_scrolling_activity.pdf
    • https://cdn.shopify.com/s/files/1/0430/1373/4563/files/blank_calendar_january_2015.pdf
    • https://cdn.shopify.com/s/files/1/0446/1314/0643/files/ultimate_guide_to_google_adwords.pdf
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/tarat.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_off00005b24.bin
edbfe889841915ebb65df7db84788acd0eb490054995750dffd2e95893bc3321		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B24 4652 bytes
font_01_sfnt_off00006afb.bin
e9b913f7001e02b8b9b36264b76bba8e66b1a13fb0ef0380e112f07388113ceb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AFB 12328 bytes

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