Malicious PDF — malware analysis report

Static analysis result for SHA-256 21707e77e043ffd5…

MALICIOUS

PDF

69.4 KB Created: 2020-08-26 08:12:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 724f28caf3abf6015a1cd9f4b74b8658 SHA-1: 5772d39b7eff138443308f2c30f98cdbd56fc0c3 SHA-256: 21707e77e043ffd55e9900eee06f4d9f5086597b33989ca68b9a5a5c781525b4
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=ffxiv+the+obvious+solution'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The PDF also contains a large number of external links, characteristic of a link farm, further supporting the malicious intent.

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=ffxiv+the+obvious+solution
    • http://files.debeerphysiotherapy.co.za/uploads/1/3/1/0/131070402/6834348.pdf
    • http://files.simplyyogacenter.org/uploads/1/3/1/4/131453718/140ae5.pdf
    • http://files.millbrookrotarydirectory.com/uploads/1/3/0/7/130775846/d99ea.pdf
    • http://wutoke.awpovrug.com/uploads/1/3/1/4/131483281/c47e79b43f8.pdf
    • http://files.officesatlibertycenter.com/uploads/1/3/2/6/132682204/6335292.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/liviferabuzujaremofo.pdf
    • https://cdn.shopify.com/s/files/1/0437/2021/2629/files/potunuz.pdf
    • https://cdn.shopify.com/s/files/1/0430/9961/9492/files/fidiroteruxibubuw.pdf
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/service_manual_bobcat_583.pdf
    • https://cdn.shopify.com/s/files/1/0431/6508/9941/files/submit_form_to_web_server.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/palixekafotew.pdf
    • https://cdn.shopify.com/s/files/1/0431/6646/6202/files/kebasuxara.pdf
    • https://cdn.shopify.com/s/files/1/0440/2656/0677/files/botozex.pdf
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/48480395438.pdf
    • https://cdn.shopify.com/s/files/1/0437/5448/7957/files/zetifixadanaku.pdf
    • https://cdn.shopify.com/s/files/1/0439/3389/2763/files/50183802773.pdf
    • https://cdn.shopify.com/s/files/1/0451/0292/3939/files/19485344892.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_off0000d2e8.bin
18974cdc62e3062bdef9d9b50a6c57cc7dcbcf66e8d01dc3064f42ed24f0730d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2E8 4772 bytes
font_01_sfnt_off0000e32e.bin
2fe76a3062cc809c57ac3704b26079ef1f53d35ef7667d75d38cff0925f8037d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE32E 11368 bytes

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