Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a891a67e19c18da…

MALICIOUS

PDF

32.7 KB Created: 2020-05-17 19:38:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b5a85518f57e5e62d5f4f2150b06afb SHA-1: bf0af296a3a10ec94eeaba88a3a0f00a7b190d70 SHA-256: 7a891a67e19c18daa7271945ca0b3d2bf7116f186596e123f923de151c8ae863
70 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are hosted on domains that appear to be part of a link farm. The document body text, though heavily obfuscated, contains a lure related to 'Netbeans for macbook pro', suggesting a social engineering tactic to encourage users to click on the embedded malicious links. No scripts were extracted, but the PDF structure itself is designed to host and distribute these links.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://nolimitationsyouthservices.org/uploads/1/3/0/6/130605111/130605111.html#netbeans++for+macbook+pro
    • http://ukswsc.com/uploads/1/3/1/3/131398000/vutexowijasamuk-lajademalos-melejeze.pdf
    • http://flaherman.com/uploads/1/3/0/5/130544413/lamuzofemarof_zebufuxupep_moxepipivoka.pdf
    • http://chronityinvestments.com/uploads/1/3/0/4/130477310/kivolonosowi.pdf
    • http://7soundenergy.com/uploads/1/3/0/3/130379458/gibufofepad_sakabof_todanafimasetu_gipodidarififeg.pdf
    • http://bandbpoolservice.net/uploads/1/3/0/6/130621516/wesibemixaxiw.pdf
    • http://totalinjection.net/uploads/1/3/1/4/131438098/mibutoweroxe.pdf
    • http://kissnivy.com/uploads/1/3/0/6/130604639/4a6635848f.pdf
    • http://timsellersod.net/uploads/1/3/0/2/130289262/jagasonajonebuwipu.pdf
    • http://trailbalzingamstaffs.net/uploads/1/3/0/7/130739648/6cc922.pdf
    • http://bankshomecare.com/uploads/1/3/0/6/130604945/faxuweru.pdf
    • http://infinitychocolates.com/uploads/1/3/0/6/130604653/bodis.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_off000054fd.bin
86eda61ca896795b8fd74f675c8b519f4910e4fc986a651e5b6228f1e7c903d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54FD 10176 bytes

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