Malicious PDF — malware analysis report

Static analysis result for SHA-256 43a91b98e2fd0250…

MALICIOUS

PDF

38.7 KB Created: 2020-08-22 20:52:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 495d4e790f3b8d502a1ed2a411e7c08f SHA-1: be8aa667401a734f5e0338b4b577f9a1a5f510bb SHA-256: 43a91b98e2fd02502023d0e1c3bc4ea9c50e4230c7ab123483f9342633747d4a
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 'ttraff.cc'. The document body, though heavily obfuscated, also contains this URL and other URLs that appear to be part of a link farm designed for SEO manipulation. The primary malicious URL is used to redirect the user, likely to a phishing or malware distribution site.

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=babuji+dheere+chalna+remix+song
    • http://gulubup.opengatetheatre.com/uploads/1/3/1/3/131383943/ac8a502e23ad78.pdf
    • http://wusabe.multimediocrityshow.com/uploads/1/3/0/7/130740178/1660626.pdf
    • http://files.southatlantacherokees.com/uploads/1/3/0/7/130739522/f112af7f2363c.pdf
    • https://cdn.shopify.com/s/files/1/0462/7690/3061/files/utorrent_app_for_pc_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0429/6186/2810/files/fijukag.pdf
    • https://cdn.shopify.com/s/files/1/0436/3943/9510/files/xapuraxomi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/tijugerosaxejizole.pdf
    • https://cdn.shopify.com/s/files/1/0436/4887/6697/files/kubernetes_documentation_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/5168/7837/files/best_ayurvedic_medicine_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/9102/4277/files/91025000271.pdf
    • https://cdn.shopify.com/s/files/1/0431/5280/1954/files/xuruxipake.pdf
    • https://cdn.shopify.com/s/files/1/0428/9013/3663/files/wepijerese.pdf
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/95233420356.pdf
    • https://cdn.shopify.com/s/files/1/0428/9508/1625/files/police_radio_scanner_apps_for_android.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/74832969368.pdf
    • https://cdn.shopify.com/s/files/1/0433/8591/3500/files/11664028326.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_off00004e41.bin
de16e467b65f641b63e8f1d1c0ee531b7568113fdf07810e28262e9563db03df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E41 5688 bytes
font_01_sfnt_off00006164.bin
ec4c01c26b118cb7ec432d8211a07e788e5d92510d3950e55c051ea278c86a93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6164 14036 bytes

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