Malicious PDF — malware analysis report

Static analysis result for SHA-256 5705194814a07006…

MALICIOUS

PDF

47.5 KB Created: 2020-08-05 02:01:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ab8f118e705faf2c32de2e2023e07bd SHA-1: 7ae9c95f858bbd29078ebcc9d886c2accc001b29 SHA-256: 5705194814a07006932d12f5c99075b6d9893959978d496194f9f79e9fcd5d83
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=absorb%25C3%25A2ncia+e+transmit%25C3%25A2ncia+pdf. The document body, though heavily obfuscated, contains this URL, suggesting it's the intended destination. The presence of numerous links to external PDFs, many hosted on cdn.shopify.com, indicates a link farm or SEO poisoning attempt to mask the malicious redirector.

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=absorb%25C3%25A2ncia+e+transmit%25C3%25A2ncia+pdf
    • http://files.samuelpakart.com/uploads/1/3/1/8/131856100/5483001.pdf
    • http://files.springshine.us/uploads/1/3/1/8/131856415/9074733.pdf
    • http://files.thedisappearedreport.org/uploads/1/3/0/8/130813521/8681384.pdf
    • http://files.maghknog.com/uploads/1/3/1/1/131164556/kenotesinifafutes.pdf
    • http://files.thehopkinsgallerystore.com/uploads/1/3/0/7/130740065/8eb9ab3ca66c8.pdf
    • https://cdn.shopify.com/s/files/1/0430/8670/8893/files/toxoplasmosis_gpc.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gidawibozifuniji.pdf
    • https://cdn.shopify.com/s/files/1/0435/0397/6614/files/10543732365.pdf
    • https://cdn.shopify.com/s/files/1/0440/7564/7128/files/49388963522.pdf
    • https://cdn.shopify.com/s/files/1/0433/4521/5637/files/94788662123.pdf
    • https://cdn.shopify.com/s/files/1/0429/8414/5049/files/git_delete_local_commit.pdf
    • https://cdn.shopify.com/s/files/1/0433/6353/2951/files/zinezof.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/pump_action_22.pdf
    • https://cdn.shopify.com/s/files/1/0432/4225/8587/files/92877260427.pdf
    • https://cdn.shopify.com/s/files/1/0430/8602/0775/files/49004561108.pdf
    • https://cdn.shopify.com/s/files/1/0428/4914/0902/files/60149683385.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_off000074eb.bin
c7b3661d3704442cfce1cce9e411ad7b3e57001521f9b2b5e4926aa450eed989		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74EB 5640 bytes
font_01_sfnt_off00008772.bin
961da6dd12e0c9a32978b7ab081b78a81d0700188c147baaeb51c6b8bb8b4c08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8772 12928 bytes

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