Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf0e421534237e60…

MALICIOUS

PDF

34.4 KB Created: 2020-08-03 06:42:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e1d5bff5e34cd1f9baa274dc4078732 SHA-1: 3475e676d19725d3ae776a08859fad8088ed1720 SHA-256: cf0e421534237e602c5bfeaaffa318405cee21c6a6abe25d7f552fce9b9cfef2
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=the+light+between+oceans+pdf+download'. The document body, though heavily corrupted, contains fragments of this URL and other PDF links, suggesting a link farm designed to attract traffic. No scripts were extracted from this sample.

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=the+light+between+oceans+pdf+download
    • http://files.538studio.com/uploads/1/3/1/6/131606127/numevov_nepagozusoge.pdf
    • http://files.carlscite.com/uploads/1/3/0/7/130776646/05d12.pdf
    • http://tudameb.ellenjohnsonsirelafcorruption.com/uploads/1/3/1/8/131871980/rezilosuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/0604/2013/files/lonesakivabigole.pdf
    • https://cdn.shopify.com/s/files/1/0430/6485/2634/files/nosumulanorudife.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/42798976472.pdf
    • https://cdn.shopify.com/s/files/1/0432/7833/6165/files/65579647475.pdf
    • https://cdn.shopify.com/s/files/1/0430/1750/2869/files/pawawixumenibafixasanop.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sefumiwizekoreletete.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vemuvuferakodumi.pdf
    • https://cdn.shopify.com/s/files/1/0428/1283/3959/files/kinipegasanazixogu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7015/2088/files/bitumasuwebalas.pdf
    • https://cdn.shopify.com/s/files/1/0437/8610/9086/files/28911914392.pdf
    • https://cdn.shopify.com/s/files/1/0429/1988/7001/files/fopinenuxoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/8068/7520/files/73219730634.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_off00004811.bin
0461e0401241192b037c10040b1d4a811cdf9dd1cfd8877472c9b2dbc377993f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4811 5500 bytes
font_01_sfnt_off00005adf.bin
9f37e142d530c016006eab34706466903919c1505423ca516a8797baf77cc5ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ADF 9972 bytes

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