Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ace9a07958b7ae1…

MALICIOUS

PDF

50.0 KB Created: 2020-08-16 18:43:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9672dad93b2782c8e31fcafae43a0f73 SHA-1: 56fd0544914fa714cd589cb83d84125781ffdc8b SHA-256: 8ace9a07958b7ae1c6b2adef5ae1c3f29a587ba7ebafd69e4f4a5059873ca07d
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate documents, but the primary link redirects to a known malicious redirector. The document body itself is heavily obfuscated but contains the primary malicious URL. The heuristic firings indicate the PDF is a malicious redirector and contains a link farm.

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/pify?keyword=flash+bleach+safety+data+sheet
    • http://waxojage.faithcombible.org/uploads/1/3/2/6/132681352/mafexalasuj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/70354855800.pdf
    • https://cdn.shopify.com/s/files/1/0431/4267/6648/files/deficiencia_de_vitamina_e.pdf
    • https://cdn.shopify.com/s/files/1/0432/8400/5032/files/panikawizalefevevo.pdf
    • https://cdn.shopify.com/s/files/1/0428/0742/7238/files/burupokumo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7573/9553/files/56818391001.pdf
    • https://cdn.shopify.com/s/files/1/0434/0331/3308/files/wutujejefalijototagapuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/6528/6564/files/55975132716.pdf
    • https://cdn.shopify.com/s/files/1/0432/1184/9892/files/9x-_7i_3_3x-_7u.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6517/files/tibulivagatoraw.pdf
    • https://cdn.shopify.com/s/files/1/0432/8184/2341/files/58194471063.pdf
    • https://cdn.shopify.com/s/files/1/0436/8397/1237/files/56819007907.pdf
    • https://cdn.shopify.com/s/files/1/0436/0686/8126/files/genetic_engineering_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0436/0519/6957/files/82731117558.pdf
    • https://cdn.shopify.com/s/files/1/0434/3326/3253/files/34869720387.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_off00008596.bin
ce1d84e18cdd1d390cb3c1c5b26c5d727b89cd5d2a05e0c755ea02fff5594d62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8596 5208 bytes
font_01_sfnt_off0000974a.bin
8f6097d5819864e98e0126541cd5165a1fd192e84f39966df714d69ba3938b4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x974A 10412 bytes

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