Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ac1d581ddc52cf4…

MALICIOUS

PDF

45.7 KB Created: 2020-07-27 17:26:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70786fd8c72229390ad3859c3082df85 SHA-1: 7bc2c5dec269494a3aaf8b551c81f5f204175e3e SHA-256: 2ac1d581ddc52cf4f6400fb682b9f5344fada7b2515b66a1c12f5cbd5413b514
120 Risk Score

Malware Insights

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

The PDF file contains embedded links that redirect to malicious infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, contains text related to 'Microsoft biztalk adapter pack 2013', suggesting a lure to disguise the malicious intent. The 'PDF_SEO_LINK_FARM' heuristic indicates a large number of outbound links, further supporting a malicious redirection scheme.

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=microsoft+biztalk+adapter+pack+2013
    • http://files.exclusivelyyourvilla.com/uploads/1/3/0/8/130814279/7280c40a.pdf
    • http://files.simplelifebrewing.com/uploads/1/3/1/4/131438008/xirojerudabatagetir.pdf
    • http://files.hotspringswinery.com/uploads/1/3/0/9/130969939/negurawumidurajap.pdf
    • http://files.lcmupc.com/uploads/1/3/1/8/131856567/e879f3514df7b.pdf
    • http://files.owlsendart.com/uploads/1/3/1/3/131384679/1556114.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28650507632.pdf
    • https://cdn.shopify.com/s/files/1/0429/5216/3481/files/rajamidaxopo.pdf
    • https://cdn.shopify.com/s/files/1/0438/9522/6523/files/89941242857.pdf
    • https://cdn.shopify.com/s/files/1/0432/5752/8480/files/11102455254.pdf
    • https://cdn.shopify.com/s/files/1/0431/4864/0418/files/sonolupu.pdf
    • https://cdn.shopify.com/s/files/1/0430/2556/3799/files/tujuwisaxumuzijisuwobewup.pdf
    • https://cdn.shopify.com/s/files/1/0432/7689/4372/files/9801767283.pdf
    • https://cdn.shopify.com/s/files/1/0437/1929/5131/files/gulebasaminutok.pdf
    • https://cdn.shopify.com/s/files/1/0430/6737/5770/files/vabumaradidakodenod.pdf
    • https://cdn.shopify.com/s/files/1/0429/0412/5599/files/47462795521.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_off00007441.bin
8df235326b5ae5ca811403d054dafc128845c39a6acad1b212a36b30700f323e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7441 5580 bytes
font_01_sfnt_off00008752.bin
c2fe8481f4d962d2ee707c6812f92d2a9281bb335184cb98bfc6c6085cfd5193		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8752 9988 bytes

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