Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a129f5c87069f66…

MALICIOUS

PDF

55.0 KB Created: 2020-03-21 11:10:12 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 74dfb58617e6f8364143a7120c12c87e SHA-1: 3014cc97bf4441f567768b87d78d545f6509c7f7 SHA-256: 8a129f5c87069f66b4cbf6b7976389f1ab35a4b0f89f98563b1084c093b4428c
102 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to PDF files, suggesting a link farm or SEO spam tactic. The document body mentions 'Oracle pl sql job openings in pune', indicating a lure to attract users. The presence of a 'Visible LOLBin command execution instruction' heuristic suggests that the PDF may also contain embedded commands or scripts intended to execute malicious code, likely to download and execute a second-stage payload.

Heuristics 4

  • 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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://humblegrit.com/uploads/1/3/0/6/130603715/130603715.html#oracle+pl+sql+job+openings+in+pune
    • http://creativeenergetics.org/uploads/1/3/0/6/130621178/mufaxoruwamad.pdf
    • http://d2lmanagementllc.com/uploads/1/3/0/5/130590671/d9b90c622.pdf
    • http://coastlinetilellc.com/uploads/1/3/0/7/130739404/8445322.pdf
    • http://didlogic.org/uploads/1/3/0/7/130775878/1037994.pdf
    • http://cmd368shijiebeitouzhu.jhamrick.com/uploads/1/3/0/6/130603896/d4c3567471e1.pdf
    • http://mindfulnesscenteronline.com/uploads/1/3/0/2/130287813/4987624.pdf
    • http://whiteoaknaturals.com/uploads/1/3/0/7/130775859/8741806.pdf
    • http://www.elementz.eu/uploads/1/3/0/2/130287936/5521369.pdf
    • http://paperandposte.com/uploads/1/3/0/5/130590026/xusibamidijowo.pdf
    • http://velvetsmokes.com/uploads/1/3/0/5/130551728/d24c9cf4a2a8fe.pdf
    • http://mysunshinedistributors.com/uploads/1/3/0/2/130291800/a3eddb4.pdf
    • http://optionsincaring.net/uploads/1/3/0/4/130488732/detemomo.pdf
    • http://cannescarwash.com/uploads/1/3/0/2/130272886/1484196.pdf
    • http://scottyhilldesigns.com/uploads/1/3/0/8/130814129/weviluzapiwaxar.pdf
    • http://mikaelchalyce.com/uploads/1/3/0/5/130590287/1316292.pdf
    • http://dokkanaccountseller.com/uploads/1/3/0/2/130289272/d6bb46835b.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_off0000984b.bin
d8c09ddd3fdfc1d87a0e8d3ea1c5c5ec012479f7732f992ae02d1f3c2c3919ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x984B 8280 bytes
font_01_sfnt_off0000b81d.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB81D 16036 bytes

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