Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3b86110946f084e…

MALICIOUS

PDF

43.8 KB Created: 2020-08-05 02:16:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e5a8d64489e22e92d8673a9344efeb6 SHA-1: 3a58ea93b710e72b28e03da64c4abc68d01c2897 SHA-256: e3b86110946f084ed7a64b18fd837003f23986fbcd7720084de30e106baa2e43
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, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=academia+de+vampiros+livros+download+pdf', likely serves as a lure to a malicious site. The document also contains a large number of external PDF links, many pointing to Shopify, suggesting a link farm used for SEO poisoning or distributing further malicious content. The primary malicious IOC is the redirector URL.

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=academia+de+vampiros+livros+download+pdf
    • http://files.sports-physio-online.com/uploads/1/3/0/7/130775934/1616338.pdf
    • http://files.bestinthewestevents.com/uploads/1/3/0/8/130814157/gapakakirasezefo.pdf
    • http://files.jamaxe.com/uploads/1/3/2/7/132712006/00181dd999ab.pdf
    • http://files.juliaberry.org/uploads/1/3/0/8/130813325/731c972765.pdf
    • https://cdn.shopify.com/s/files/1/0430/4109/5834/files/70440374575.pdf
    • https://cdn.shopify.com/s/files/1/0429/7277/4556/files/fanenozulogivilupasan.pdf
    • https://cdn.shopify.com/s/files/1/0435/7970/3451/files/jexarejowetibizif.pdf
    • https://cdn.shopify.com/s/files/1/0430/5013/9801/files/bimuleligarekubaxexa.pdf
    • https://cdn.shopify.com/s/files/1/0434/4777/9478/files/potassium_bromide_msds_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0437/0658/1147/files/lodukajukutumig.pdf
    • https://cdn.shopify.com/s/files/1/0435/3910/3912/files/wurofajagufewonefefi.pdf
    • https://cdn.shopify.com/s/files/1/0432/0496/8603/files/5375370570.pdf
    • https://cdn.shopify.com/s/files/1/0432/8125/2512/files/color_that_start_with_the_letter_a.pdf
    • https://cdn.shopify.com/s/files/1/0431/2009/9488/files/30493851172.pdf
    • https://cdn.shopify.com/s/files/1/0429/0940/1254/files/fakoniw.pdf
    • https://cdn.shopify.com/s/files/1/0436/7400/9753/files/72838026008.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_off00006d9b.bin
19ac87290c40e0562d23150282659278617b3d8b0dd455c7661585a749a02713		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D9B 5440 bytes
font_01_sfnt_off0000801e.bin
29ecc60a7d60f054751a935abe4bcf46cf9c25e92a2b41de164ada1192b247d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x801E 9992 bytes

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