Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd54c78a6f354acb…

MALICIOUS

PDF

44.8 KB Created: 2020-07-30 18:25:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87d8c5a4a05f744160abd63e99743e37 SHA-1: 81cff1fff938bcdfc0aee58435bc75ffd7289d76 SHA-256: dd54c78a6f354acb1f6a0170ca1afaf02a3fe7e98f2c72483ee0fdf2621122e8
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic match for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to joining a PDF on Facebook, suggesting a social engineering lure. The primary IOC is the malicious redirector URL, which is likely used to funnel victims to a further stage of the attack.

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=joindre+un+fichier+pdf+sur+facebook
    • http://files.jdmwebsitedesign.com/uploads/1/3/0/8/130874333/7533971.pdf
    • http://files.onthewayotw.com/uploads/1/3/0/7/130775297/debago.pdf
    • http://files.thecastlespa.co.uk/uploads/1/3/2/6/132696111/gobupekiw_renakalalufuful.pdf
    • http://files.drak-arts.com/uploads/1/3/1/4/131406211/zejufapepuv-bokofabuzev.pdf
    • http://files.pureperspectives.com/uploads/1/3/1/6/131606284/dazezafaz_fesaniruletonan.pdf
    • http://files.jdmwebsitedesig
    • https://cdn.shopify.com/s/files/1/0430/7081/6407/files/boxab.pdf
    • https://cdn.shopify.com/s/files/1/0430/5590/6970/files/burafavibubizipesobopa.pdf
    • https://cdn.shopify.com/s/files/1/0430/8058/1274/files/59537616326.pdf
    • https://cdn.shopify.com/s/files/1/0437/3980/7893/files/13032471691.pdf
    • https://cdn.shopify.com/s/files/1/0429/0641/9367/files/bijofedabazexen.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6343/files/xarevosidogipezofupamabow.pdf
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/suromete.pdf
    • https://cdn.shopify.com/s/files/1/0431/0797/5330/files/36888939564.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/41264742185.pdf
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/85445360267.pdf
    • https://cdn.shopify.com/s/files/1/0430/3175/6957/files/vosige.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bobidaxida.pdf
    • https://cdn.shopify.com/s/files/1/0430/6314/8706/files/xoronirapezinosevel.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_off00006d24.bin
f0b1c12a9317876228cf25f5e4a8e854bfe542f55c144d390344a3147edf7a10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D24 5208 bytes
font_01_sfnt_off00007eb7.bin
16047254936b66c39aec528b7ac85d9d43f9f3841a1cfd067d25e062f19a528f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB7 11924 bytes

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