Malicious PDF — malware analysis report

Static analysis result for SHA-256 975bc0e470b0e701…

MALICIOUS

PDF

76.1 KB Created: 2020-09-01 21:48:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 758c272459775940ef0657750bcab17e SHA-1: 55600c088dbb71dd430b4b0d14dbf0f5c2f1f721 SHA-256: 975bc0e470b0e701ffa29c8ee8d1ea9ad868e77e46a50a63ddb7815a7095fd06
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=gspread.+exceptions.+spreadsheetnotfound+spreadsheet+not+found'. This URL is likely part of a phishing or malware distribution chain. The file also exhibits characteristics of a PDF link farm, with numerous external links, further suggesting malicious intent.

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/wix?keyword=gspread.+exceptions.+spreadsheetnotfound+spreadsheet+not+found
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekugoxozeritazol.pdf
    • https://cdn.shopify.com/s/files/1/0433/4583/8232/files/wuzaxulaxuvamomab.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bifezunelavezide.pdf
    • https://cdn.shopify.com/s/files/1/0435/6849/6798/files/osmosis_worksheet_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0440/1122/5246/files/mathematics_calculus_formula.pdf
    • https://static.usrfiles.com/ugd/d3758e_8f1d9b2b1c034db997da744bae4acedd.pdf
    • https://static.usrfiles.com/ugd/15cd4d_7bbd76eddfe3428b847bd2937d990284.pdf
    • https://static.usrfiles.com/ugd/b8c837_f602e6d0c98f4ab48961cb3c154c89d3.pdf
    • https://static.usrfiles.com/ugd/e745be_641b2836e5004a7a855456ab150409c5.pdf
    • https://static.usrfiles.com/ugd/b8c837_cf4fd5e7a2aa495abb1af9dae9d41512.pdf
    • https://static.usrfiles.com/ugd/06497e_1b84964e514d4679ae58c4fe64ba2a98.pdf
    • https://static.usrfiles.com/ugd/cdb50c_3093b2442d804c0ea8d481ebd7df7c8a.pdf
    • https://static.usrfiles.com/ugd/b85eb0_cd043973eb6a463fbd3e6ed9e7ad98b6.pdf
    • https://static.usrfiles.com/ugd/defd8a_78179555879f4782a70e4766c94395af.pdf
    • https://static.usrfiles.com/ugd/b8bbd7_22324dd500104619b337d651cd2b9adb.pdf
    • https://static.usrfiles.com/ugd/b8c837_9f28f964dfbd4c9dbd9f1f6acb0820fe.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a8b8.bin
56bd45597382c04374428759a829a47baa447976db595610c3664338011d373f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8B8 8376 bytes
font_01_sfnt_off0000c4d8.bin
4f1858b5b2bb030217dca5da0cc88b6da8a0233cbb165c11dd31eab222e7dc0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC4D8 5344 bytes
font_02_sfnt_off0000d70b.bin
1a3d90d0126561dc2a34a9e93aa14d095ea0893622f70bcd2d7264eb7a528778		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD70B 16312 bytes
font_03_sfnt_off000109f2.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501		 pdf-font-stream PDF embedded font (sfnt) at offset 0x109F2 16204 bytes

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