Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffc002a2eb3d670e…

MALICIOUS

PDF

41.6 KB Created: 2020-09-01 00:14:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 957fd84cf2262d117c5ac37dc02900f0 SHA-1: 3e5938ee7f6fa03d92c74e92f76ae521fb1cc09e SHA-256: ffc002a2eb3d670e620d5d5dcc61beaae346025afa0f0c6fbea4460759f9ba05
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'Bohemian rhapsody guitar tab sheet music' and the malicious URL itself, suggesting a lure. The PDF also contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic, which are likely part of a link farm to improve search engine ranking for 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=bohemian+rhapsody+guitar+tab+sheet+music
    • https://cdn.shopify.com/s/files/1/0437/5465/1799/files/61062819395.pdf
    • https://cdn.shopify.com/s/files/1/0429/8348/9687/files/38074108575.pdf
    • https://cdn.shopify.com/s/files/1/0439/8107/8686/files/86243427879.pdf
    • https://cdn.shopify.com/s/files/1/0428/6794/9724/files/29923464205.pdf
    • https://cdn.shopify.com/s/files/1/0432/0942/5056/files/biblia_reina_valera_actualizada.pdf
    • https://cdn.shopify.com/s/files/1/0427/9920/2467/files/template_for_wedding_envelope_printing.pdf
    • https://cdn.shopify.com/s/files/1/0463/2366/3008/files/agile_project_management_process.pdf
    • https://cdn.shopify.com/s/files/1/0430/7773/0464/files/xavebuvagodezebetabavepe.pdf
    • https://cdn.shopify.com/s/files/1/0438/6599/7472/files/far_westerns_swimming_2019_psych_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/9272/2339/files/comment_avouer_ses_sentiments__une_fille.pdf
    • https://cdn.shopify.com/s/files/1/0429/2539/2035/files/alice_in_wonderland_file.pdf
    • https://cdn.shopify.com/s/files/1/0428/8099/1388/files/tujipejojazoj.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_off000062d0.bin
29b72a15b8455998bf0381b0761f9a0a31cb3f53903f334fe22e90b1190d8f7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62D0 5744 bytes
font_01_sfnt_off00007631.bin
d2131cfa89aacbb13d797e6e7f63895df1d94d52f8f9088fd3473fd3ce003645		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7631 10488 bytes

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