Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab375344f320e926…

MALICIOUS

PDF

116.5 KB Created: 2020-04-09 13:48:42 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a5f5830202b21e43893ef9b897e94073 SHA-1: 55a3a3e6318f428af562b09dafb9eb799b2a4676 SHA-256: ab375344f320e926ecae7820c9ce7b74685a649d28d3b819e142964069cb0985
92 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many URLs pointing to PDF files hosted on various domains. The primary URL, http://superligenergy.com/uploads/1/3/0/5/130588499/130588499.html#oracle+database+2+day+++performance+tuning+guide+12c, suggests a lure related to technical documentation. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the structure indicates a likely phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9932

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://superligenergy.com/uploads/1/3/0/5/130588499/130588499.html#oracle+database+2+day+++performance+tuning+guide+12c
    • http://cassianwheeler.com/uploads/1/3/0/2/130272240/vowuzuvozirobur_sonepegolosig_kevelifita.pdf
    • http://haleyshaferpeace.com/uploads/1/3/0/7/130739892/23292cd0b.pdf
    • http://blackringarmory.com/uploads/1/3/0/4/130435898/7876635.pdf
    • http://letspull.app/uploads/1/3/0/6/130639484/xasitaxu.pdf
    • http://dunriteperformance.com/uploads/1/3/1/0/131070230/c10f33c00.pdf
    • http://cal-shopping.com/uploads/1/3/0/7/130775537/2235281.pdf
    • http://myblogandlog.com/uploads/1/3/0/2/130289732/389b2723.pdf
    • http://jleeuniquecreations.com/uploads/1/3/1/3/131379680/4825735.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001a18d.bin
d31dd1d54ad02c87a122f860416b9b751554da41f39721cf1c5eac9fa6edbaf6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A18D 9308 bytes

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