Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1bc7a69125a2bbc…

MALICIOUS

PDF

42.6 KB Created: 2020-08-08 02:25:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bd660048829ea8d9b33a11d5f489e5a SHA-1: 69b861620934cbd4cc466b304685f1006f7ddd07 SHA-256: c1bc7a69125a2bbc934578b935a19d45af2136d22decd1ee6bd351dbbdc9df77
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=brassai+paris+de+nuit+pdf, which likely leads to a malicious payload or phishing site. The document body, though heavily obfuscated, contains references to this URL and other benign-looking PDF links, suggesting a lure to disguise the malicious redirection.

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=brassai+paris+de+nuit+pdf
    • http://files.pound4poundathletics.com/uploads/1/3/2/7/132710794/tiluwipuwizol.pdf
    • http://files.feltunik.com/uploads/1/3/2/6/132681954/9268137.pdf
    • http://files.mlfickcourtlandkindergarten.com/uploads/1/3/1/3/131378950/gojukefitijijuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/37278413385.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/totavari.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/hp_officejet_pro_8600_plus_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38935964995.pdf
    • https://cdn.shopify.com/s/files/1/0430/2631/7473/files/98571457711.pdf
    • https://cdn.shopify.com/s/files/1/0432/5202/3458/files/worijimaposirudamib.pdf
    • https://cdn.shopify.com/s/files/1/0434/8890/3325/files/nibelemuteji.pdf
    • https://cdn.shopify.com/s/files/1/0428/2207/4534/files/delonghi_espresso_machine_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dubisetebezurazoxodo.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_off00006471.bin
2c4b80688bba1f3e8c9169f4f5bcd008265082b77ef09c5c2be635f1eafeb15e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6471 5052 bytes
font_01_sfnt_off000075af.bin
4787e659f724854092d2a5f1d1b55cf57a5fb5ec45717e36b733fb42d93a0290		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75AF 12536 bytes

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