Malicious PDF — malware analysis report

Static analysis result for SHA-256 cac1d575ef22f213…

MALICIOUS

PDF

43.6 KB Created: 2020-08-05 11:01:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0fdb033eb7d1ac91524119d9b600908 SHA-1: 289e9885a69aa07aedb500ed5c5362fa4808161b SHA-256: cac1d575ef22f2130176f5121fc3e930a7a63bde92a3d3f72c32197d55dacf26
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that leads to the redirector, suggesting a lure to download further content. The primary attack pattern involves redirecting the user to malicious infrastructure disguised as a novel download.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=dominating+sword+immortal+novela+espa%25C3%25B1ol+pdf
    • http://files.northplainfieldpark.com/uploads/1/3/2/6/132682030/nekizadoputeg_tuxamasozidalul_mumevamibe_jipidap.pdf
    • http://files.psmk.ca/uploads/1/3/1/4/131453494/1102655.pdf
    • http://files.bigpineysincredibulls.com/uploads/1/3/0/9/130969763/kewusuw_kaderamolisizav_posidaxuvaxek.pdf
    • http://files.visitandrewchapelumc.org/uploads/1/3/1/8/131856247/xasidobolag-pevoge.pdf
    • http://files.dream-cleanz.com/uploads/1/3/1/8/131858045/9cc781cb8c7df0b.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2125/files/76008453301.pdf
    • https://cdn.shopify.com/s/files/1/0429/5750/4668/files/556087451.pdf
    • https://cdn.shopify.com/s/files/1/0432/0142/9662/files/sewimemovude.pdf
    • https://cdn.shopify.com/s/files/1/0432/2403/9592/files/sefujif.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4601/files/94852135121.pdf
    • https://cdn.shopify.com/s/files/1/0436/9930/6649/files/algebra_practice_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0431/6128/8868/files/sejukobipudunatex.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/savowogofoxifonikili.pdf
    • https://cdn.shopify.com/s/files/1/0428/9724/4316/files/35837874766.pdf
    • https://cdn.shopify.com/s/files/1/0428/9822/7353/files/wonigilila.pdf
    • https://cdn.shopify.com/s/files/1/0431/7144/6939/files/16509098552.pdf
    • https://cdn.shopify.com/s/files/1/0430/6717/9162/files/pituitary_hormones.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ade.bin
93d9704d2d15c7f938347329268be9b8496653d48f3716cb5103e5a5535c4f3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x5ADE 5512 bytes
font_01_sfnt_off00006d57.bin
300792a177cc5dcc6b43c506c11d912b1c46ccfb4e0888f84f24cf3e27de2459
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D57 10368 bytes
font_02_sfnt_off000090a7.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x90A7 4324 bytes