Malicious PDF — malware analysis report

Static analysis result for SHA-256 cee60241067ea54f…

MALICIOUS

PDF

32.1 KB Created: 2020-08-01 06:44:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 909bce6bc341b128ff68b44c0a9b02f0 SHA-1: cdcca4b66f76c72ade2190ed5233ca5c25081ddc SHA-256: cee60241067ea54fdcbca1a55975d0a4886c3a7ddba427eb7e2125e2e36814c2
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains text related to '2017 tamil movies download' and a URL that aligns with the malicious redirector heuristic. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm designed to attract traffic, with at least one link pointing to a known malicious redirector.

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.ru/pify?keyword=2017+tamil+movies+download
    • http://files.sharingeducationlearningforlife.org/uploads/1/3/0/9/130969904/13301b070.pdf
    • http://files.klrider.com/uploads/1/3/2/6/132682882/c1321121.pdf
    • http://files.kenoshaforgottenfriends.org/uploads/1/3/2/3/132302810/durixinupidigobudud.pdf
    • http://files.downtoascience.co/uploads/1/3/0/8/130814680/papaxifudimeso.pdf
    • http://files.abetterdayhomecareservicesinc.com/uploads/1/3/1/8/131858661/8552387.pdf
    • https://cdn.shopify.com/s/files/1/0435/4198/7479/files/43247805684.pdf
    • https://cdn.shopify.com/s/files/1/0434/2412/0984/files/22064230276.pdf
    • https://cdn.shopify.com/s/files/1/0428/8475/9711/files/77081789106.pdf
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/48689772258.pdf
    • https://cdn.shopify.com/s/files/1/0428/5743/1199/files/87491138740.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63912397784.pdf
    • https://cdn.shopify.com/s/files/1/0438/4561/5766/files/24933999771.pdf
    • https://cdn.shopify.com/s/files/1/0436/2380/9187/files/73161916866.pdf
    • https://cdn.shopify.com/s/files/1/0433/8624/1187/files/vamafowipuwejosalolimevik.pdf
    • https://cdn.shopify.com/s/files/1/0437/4151/1834/files/zafado.pdf
    • https://cdn.shopify.com/s/files/1/0432/0316/6369/files/sinotoxedewijidejife.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_off0000433b.bin
3d835610b0660c28bc16bd59f320b13b4d7039f33b0716a8e0bfbd9d425d52e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x433B 5340 bytes
font_01_sfnt_off0000556d.bin
62994301f32f36374fd012fd2893344884acf28cd7cf8cb4ca59e48b44e1740c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x556D 8840 bytes

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