Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b545fe83c484563…

MALICIOUS

PDF

170.8 KB Created: 2016-10-10 08:59:52 UTC Authoring application: RAD PDF (via RAD PDF 2.38.3.1 - http://www.radpdf.com)
MD5: 0985644f74f618f71d6b290d88e71a74 SHA-1: dc19bde48f57060d1987f56609b45c206aeec6e6 SHA-256: 9b545fe83c4845637a3404504cecd1d9c64c01af0a55d9230d2dc38135912b17
120 Risk Score

Malware Insights

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

The PDF document is identified as malicious by ClamAV and an ML classifier. It employs an image-only lure, a common phishing tactic, to obscure a clickable link. The embedded JavaScript and numerous external URLs, such as http://www.diamondcreationslb.com/doc/rdd.htm, suggest the document's purpose is to redirect the user to a malicious site, likely for credential harvesting or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8676

Heuristics 5

  • ClamAV: Pdf.Dropper.Agent-7286160-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7286160-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 1 text block(s), carries a click-outward action, and is only 170 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://www.diamondcreationslb.com/doc/rdd.htm
    • http://ucil-bd.com/broslex/index.php
    • http://ruseuropharm.ru/dotun/index.php
    • http://ajanssir.com/holy/index.php
    • http://ajanssir.com/profile/index.php
    • http://yukikondo.jp/dot/index.php
    • http://ucil-bd.com/araba/index.php
    • http://omairent.com/yahoo/index.php
    • http://ucil-bd.com/dtun/index.php
    • http://bmstn.com/dotun/index.php
    • http://bmstn.com/onakoya/index.php
    • http://52wanpi.com/dotun/index.php
    • http://ascoscales.com/cog/index.php
    • http://omairent.com/lol/index.php
    • http://igbeyawodating.com/modules/boonex/forum/js/8ddd22bd83fdad48fb12a5a7351abd0q/index.php
    • http://akabakersfield.com/wp-content/pdf/index.php
    • http://akabakersfield.com/wp-includes/zkqlfqwcbpor55nvqftjk/index.php
    • http://oldbooksstore.com/files/pdfdocument/index.php
    • http://akabakersfield.com/wp-includes/pdf/index.php
    • http://arzooelectronics.com/iok/index.php
    • http://yactive.xyz/dot/index.php
    • http://alfredy.5gbfree.com/files/cash/index.php
    • http://dsdeepl.5gbfree.com/hyzikpdf/index.php
    • http://www.radpdf.com)/Creator(RAD
    • http://www.dynaforms.com
    • http://www.radpdf.com
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000258c.bin
d43e7b69e1e25fe070d522da94c4396003aae12eb7a75aecb2cc0f5e5feef6a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x258C 73728 bytes

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