Malicious PDF — malware analysis report

Static analysis result for SHA-256 974d5b71cfcd3862…

MALICIOUS

PDF

40.4 KB Created: 2020-08-21 19:17:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f03d242443dae15746e7e60041d9a55 SHA-1: 3307d26b8f24e357df0d72f795bcc0a38bb76eb6 SHA-256: 974d5b71cfcd38628814ecc890f80b1ace75caabbe6311700f82ee0e866d5ef0
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, characteristic of a link farm. One of these links, 'https://ttraff.com/pify?keyword=alto+el+peru+julio+cortazar+pdf', is identified as a malicious redirector. The document body is heavily obfuscated and appears to contain junk data, further supporting the malicious intent of redirecting users to potentially harmful sites.

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.com/pify?keyword=alto+el+peru+julio+cortazar+pdf
    • http://files.figmentsandphragmites.com/uploads/1/3/2/3/132302970/tukavagaramolorani.pdf
    • http://files.dollarsaver.org/uploads/1/3/0/7/130776123/dff23dbede04.pdf
    • http://files.midamericaconference.net/uploads/1/3/1/6/131606854/8958366.pdf
    • http://pasadev.shfestivalchoir.org/uploads/1/3/1/1/131164104/19f3f5a2407f.pdf
    • http://files.scottyppart.com/uploads/1/3/2/7/132740586/5685006.pdf
    • https://cdn.shopify.com/s/files/1/0434/0062/6341/files/repowew.pdf
    • https://cdn.shopify.com/s/files/1/0435/3500/7893/files/bekilewufawuxixo.pdf
    • https://cdn.shopify.com/s/files/1/0438/2975/6066/files/languidez_significado_ejemplo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3604/9571/files/naselawo.pdf
    • https://cdn.shopify.com/s/files/1/0431/9471/2228/files/vemetawaxivuvibupujojan.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9354/files/vemonoj.pdf
    • https://cdn.shopify.com/s/files/1/0434/3303/3877/files/21538263353.pdf
    • https://cdn.shopify.com/s/files/1/0439/1596/8667/files/65714163145.pdf
    • https://cdn.shopify.com/s/files/1/0432/2649/7182/files/birem.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_off0000505d.bin
2dfb573fcc416b9b7bac1434079fb2474fada365f5e14efbad98dfcd400df26d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x505D 4860 bytes
font_01_sfnt_off00006108.bin
edb3ae0a8b2d86fecd9c1c21d9f11420183c9b6a25691143cb4240392f67f00a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6108 11056 bytes
font_02_sfnt_off00008527.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8527 4324 bytes

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