Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ca3459a923fa051…

MALICIOUS

PDF

51.2 KB Created: 2020-09-07 16:26:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d038bb284d0b94f56c9ac30b9d0f91d SHA-1: 7671ea69b0e4f9dd1c705a70b0b29939ccb08b99 SHA-256: 1ca3459a923fa051008a098cd80c44db30b37fdff4bf97004b745e8edac0673b
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.link/wix?keyword=escardio+guidelines+heart+failure+2016`. This URL is likely used to direct users to a malicious site. The document body, though heavily obfuscated, contains the same URL, reinforcing its role as a lure. The presence of a link farm heuristic further suggests a malicious intent to distribute links.

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.link/wix?keyword=escardio+guidelines+heart+failure+2016
    • https://static.usrfile
    • https://static.usrfiles.com/ugd/808cd0_474d8172e6734b1aaba0cb26bc13baba.pdf
    • https://static.usrfiles.com/ugd/1b7c00_0b0baaa018a3430699128c7602aba2dd.pdf
    • https://static.usrfiles.com/ugd/808cd0_e61b0bf3fb604870a88847f27cca6760.pdf
    • https://static.usrfiles.com/ugd/bd5c68_13d46421192b4c50b063635b6c358eee.pdf
    • https://static.usrfiles.com/ugd/384ea4_4ab3d909674b49c8b47e89bdb3d40571.pdf
    • https://static.usrfiles.com/ugd/e4a001_6e9221da71784dd4be9d91f4d1fed6d4.pdf
    • https://static.usrfiles.com/ugd/ab922d_70f4e70cbcce40ab966e9b316a1645e8.pdf
    • https://static.usrfiles.com/ugd/bc0d1e_8d67ef75d6604407a6acf8cf56ec7a43.pdf
    • https://cdn.shopify.com/s/files/1/0431/6119/0559/files/golip.pdf
    • https://cdn.shopify.com/s/files/1/0431/3799/0818/files/9987722584.pdf
    • https://cdn.shopify.com/s/files/1/0436/2207/2480/files/rorogonadibowozaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/2562/0374/files/38383937965.pdf
    • https://cdn.shopify.com/s/files/1/0434/1488/0405/files/fekafakuperejaze.pdf
    • https://cdn.shopify.com/s/files/1/0433/9495/7466/files/neon_genesis_evangelion_op_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0432/4904/1563/files/81839705995.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b0a.bin
0b9616d1832bdef6cdb91fd16b9e45643d2515050c9b750908519292e20cd271		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B0A 5604 bytes
font_01_sfnt_off00008e09.bin
bb675dbec3aae1391e2e419aa1e04121bcfde65ec2b1307ca42009b010d3de0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E09 10400 bytes
font_02_sfnt_off0000b115.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB115 4324 bytes

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