Malicious PDF — malware analysis report

Static analysis result for SHA-256 d000ee45e24d778b…

MALICIOUS

PDF

43.5 KB Created: 2020-08-03 23:20:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b18d8a85cad6cc27e6f6f03080b2a3d0 SHA-1: df306bd7f45b5dc90bd68c10d981b9d782ff481a SHA-256: d000ee45e24d778bafcafe4678b254bc54bafee0af635227b3cc981de5e452cd
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical link to a known malicious redirector at https://ttraff.com/pify?keyword=babasling+instructions+pdf. The document body, though heavily obfuscated, appears to be a lure related to 'Babasling instructions pdf'. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful content.

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.com/pify?keyword=babasling+instructions+pdf
    • http://files.vocesintimaeartsong.org/uploads/1/3/2/6/132680853/tagibivujifak.pdf
    • http://files.vexsens.com/uploads/1/3/0/7/130775846/waforumuwanaxogudo.pdf
    • http://files.silkroadresearchcenter.org/uploads/1/3/1/4/131438708/1bf520.pdf
    • http://files.harrisondomain.org/uploads/1/3/1/4/131408172/2013890.pdf
    • http://files.cppbap.org/uploads/1/3/2/7/132740584/rabovaketar-fadaritu-tinuwezak.pdf
    • https://cdn.shopify.com/s/files/1/0434/1268/4967/files/5768873953.pdf
    • https://cdn.shopify.com/s/files/1/0429/6874/4087/files/91698878336.pdf
    • https://cdn.shopify.com/s/files/1/0428/0814/8127/files/vukigigija.pdf
    • https://cdn.shopify.com/s/files/1/0428/1673/3340/files/jinerisozi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2421/9288/files/basic_english_skills_test.pdf
    • https://cdn.shopify.com/s/files/1/0432/1263/6322/files/cultural_regions_of_the_world_geography_upsc.pdf
    • https://cdn.shopify.com/s/files/1/0438/1809/0653/files/96194730646.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97253363073.pdf
    • https://cdn.shopify.com/s/files/1/0437/3633/4501/files/nenopikokibapikagor.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/48578165570.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/52629727525.pdf
    • https://cdn.shopify.com/s/files/1/0432/8721/6293/files/jefazaxesimonevi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6885/8272/files/fozex.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_off000068a4.bin
d985c1539b35dd0291e2396fcf8095f322c91e07842f3f87a7173034e013ab80
pdf-font-stream PDF embedded font (sfnt) at offset 0x68A4 5512 bytes
font_01_sfnt_off00007b6e.bin
6ee4e7cae2ff3c12f24c2fa7f1e0bac49a00c5fdedb542b0a029f4c44a047e5c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6E 10592 bytes