Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4dbdd07f2179710…

MALICIOUS

PDF

47.1 KB Created: 2020-08-26 08:47:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 426cc88eae70a450bad2327f71387344 SHA-1: 7f6b1c7cd3bb6b2a4b59b65690e3ef428700cd38 SHA-256: c4dbdd07f2179710f65206bb6af5aa11e4966275aaf4397a63c895742f45b9cc
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to watching movies online and includes the malicious redirector URL. This suggests the PDF is designed as a lure to redirect users to malicious content.

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=watch+online+free+movies
    • http://files.claymayed.com/uploads/1/3/1/4/131437508/nuvobig.pdf
    • http://gagelip.thenorwaycenterstore.com/uploads/1/3/1/0/131070786/5752ba5581d9.pdf
    • http://gexabug.uoftdivest.com/uploads/1/3/0/9/130969426/3273694.pdf
    • http://puzozaku.pro-formancecomputers.com/uploads/1/3/0/8/130873851/nobokinu.pdf
    • https://cdn.shopify.com/s/files/1/0440/5483/9461/files/oral_candidiasis_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0431/1885/4306/files/jaxuxe.pdf
    • https://cdn.shopify.com/s/files/1/0435/0767/9387/files/jepexoribuleba.pdf
    • https://cdn.shopify.com/s/files/1/0433/3237/0584/files/53585546887.pdf
    • https://cdn.shopify.com/s/files/1/0432/2449/8333/files/gizutumaxog.pdf
    • https://cdn.shopify.com/s/files/1/0427/5778/3718/files/85534197436.pdf
    • https://cdn.shopify.com/s/files/1/0441/0982/4152/files/dasuragawedorumijiduwavex.pdf
    • https://cdn.shopify.com/s/files/1/0434/3798/1852/files/21609670151.pdf
    • https://cdn.shopify.com/s/files/1/0431/8131/0101/files/15913455216.pdf
    • https://cdn.shopify.com/s/files/1/0434/3886/6584/files/duxumenolufugetipif.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_off00007a41.bin
f2908a6c09462755ad02ec18f8b0bb3453c02c814477b15385e30e2f62477fa2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A41 5192 bytes
font_01_sfnt_off00008bca.bin
3617d8a7fc3a4e98a559fbf28b715a38ff3c3e7a49376c279c99f0ab6d97567e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BCA 10624 bytes

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