Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e7b63d13619e9c7…

MALICIOUS

PDF

62.8 KB Created: 2020-08-02 11:43:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52d5622f9d11eb5f024268d32dcf2a88 SHA-1: e57f0806be17ca974cdc5914e3e8ceb09d390a9a SHA-256: 8e7b63d13619e9c7a2e63974c2d802e4ba0c14845bb12090509ebf13075dad2c
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a critical heuristic firing for a PDF redirector link pointing to ttraff.cc. Additionally, another critical heuristic detected a large number of embedded external PDF links, with the dominant host being cdn.shopify.com. The document body contains the URL https://ttraff.cc/pify?keyword=shape+of+distribution, which is likely used to redirect users to a malicious site. The presence of numerous links suggests an attempt to distribute malware or conduct phishing attacks.

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=shape+of+distribution
    • http://files.reviverestorativeretreats.com/uploads/1/3/0/7/130775292/relawaparu-vurabovukef.pdf
    • http://files.suitlandhighschoolmodernization.com/uploads/1/3/0/9/130969762/mureni.pdf
    • http://files.elaineraydesigns.com/uploads/1/3/1/0/131071095/fuxinolezadap_davuzawiledokaz_zevizuzi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8990/3264/files/vojevepiwom.pdf
    • https://cdn.shopify.com/s/files/1/0436/4029/1486/files/matokikujilesexipezu.pdf
    • https://cdn.shopify.com/s/files/1/0438/4201/1286/files/nolosexovusogitopetog.pdf
    • https://cdn.shopify.com/s/files/1/0429/2476/9436/files/genegepe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/bifabob.pdf
    • https://cdn.shopify.com/s/files/1/0436/1627/2547/files/vevikijizalumejolixoso.pdf
    • https://cdn.shopify.com/s/files/1/0433/7985/1414/files/midigijumufemagokorovasof.pdf
    • https://cdn.shopify.com/s/files/1/0431/4470/8245/files/64900297102.pdf
    • https://cdn.shopify.com/s/files/1/0434/6649/0006/files/simejugavotaru.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vukabisozudetilo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9603/9833/files/senitozevi.pdf
    • https://www.cancer.gov/coronavirus
    • 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_off0000b936.bin
30b8b910708df197e8215ac4d62118e4919c2f05a17b968e53ebcfe9b8ed107b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB936 5340 bytes
font_01_sfnt_off0000cb55.bin
4db39c6c40cb5ffac3d7b513a1c776d5c982cad6f242ad2d642e4f0b9aea88c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB55 10304 bytes

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