Malicious PDF — malware analysis report

Static analysis result for SHA-256 8306976b60e32459…

MALICIOUS

PDF

43.8 KB Created: 2020-04-01 13:13:01 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5cf1628d4ef0b5ee2a39e14fee2c58a0 SHA-1: fba45e5771ef4d3568e87df703818181b8009638 SHA-256: 8306976b60e3245974b6c127fdca045d1f8f70aa44b3087fd5749f1ea71d0760
102 Risk Score

Malware Insights

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

The PDF document contains a large number of external links to other PDF files hosted on various domains, a technique often used for SEO poisoning or to distribute malware. The heuristic 'SE_LOLBIN_RUN_COMMAND' indicates that the document contains instructions for executing Windows command-line tools, suggesting an intent to run further malicious code. The primary attack pattern involves directing users to a network of linked documents.

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://mywavee.com/uploads/1/3/0/7/130776864/130776864.html#como+calcular+a+quantidade+de+concreto+para+laje+h8
    • http://obamachoomgang.com/uploads/1/3/0/5/130543045/kivafoporus.pdf
    • http://homeforever.info/uploads/1/3/0/3/130312968/gatotutabobomix.pdf
    • http://mail.stonewallcurling.com/uploads/1/3/0/7/130775115/gawizabogujefiloduwo.pdf
    • http://heirloomangel.com/uploads/1/3/0/6/130604027/34359fbd8.pdf
    • http://augustaconcreteandmasonry.com/uploads/1/3/0/6/130639419/5aee02cd42ec85.pdf
    • http://krystalfestival.com/uploads/1/3/0/2/130288426/6576454.pdf
    • http://shanhart.com/uploads/1/3/0/5/130551089/pegonikesi.pdf
    • http://stillazafu.com/uploads/1/3/0/2/130270792/1881081.pdf
    • http://islandgardenangel.com/uploads/1/3/0/2/130271226/78e3a197d8312.pdf
    • http://allanwoxx.com/uploads/1/3/0/3/130379824/1822065.pdf
    • http://pburg94rescue.org/uploads/1/3/0/9/130969895/5081190.pdf
    • http://videocontentstrategies.com/uploads/1/3/1/4/131407096/81541ba6b07b3.pdf
    • http://leadinglearninglisa.org/uploads/1/3/0/7/130739452/kovuwetatariliter.pdf
    • http://websepic.com/uploads/1/3/1/4/131437784/8728411.pdf
    • http://www.kansies-collective.com/uploads/1/3/0/2/130289385/37001.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_off00007a94.bin
56dd0aeabc7fe2f02bc0afc1d53a48ccda0ef68753f0d24a1da929bd3079ef42		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A94 12284 bytes

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