Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7a260f0b4cd2e1e…

MALICIOUS

PDF

54.6 KB Authoring application: LibreOffice Draw
MD5: 5ab1e553cdc450a44072e4a543b127a2 SHA-1: 15514b3dc1d3e6cd0d886291594aeb8920c02099 SHA-256: b7a260f0b4cd2e1e1bc02b000774ddd7419ae850e974e73657f6fba30862af4b
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files across various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content, as suggested by the 'PDF_SEO_LINK_FARM' heuristic. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious classification. No scripts were extracted from this sample.

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://kooben.net/uploads/1/3/0/2/130289171/liwapok.pdf
    • http://www.jcshomes.com/uploads/1/3/0/6/130640199/2462012.pdf
    • http://www.ethnish.ca/uploads/1/3/0/5/130590122/c81677704c0150.pdf
    • http://beeidentification.com/uploads/1/3/0/5/130541186/losidonikisetesov.pdf
    • http://michaelyipfilms.net/uploads/1/3/0/6/130621964/653656.pdf
    • http://theswitches.com/uploads/1/3/0/8/130874680/lenezeronan.pdf
    • http://shopluckybamboo.com/uploads/1/3/0/5/130551770/90b96edbc27.pdf
    • http://webmail.nauticalreplicas.com.au/uploads/1/3/0/4/130436140/wiwipanapulo.pdf
    • http://natronacountyclassifiedprofessionalsassociation.org/uploads/1/3/0/3/130323564/wimugum-nodabarelubedag.pdf
    • http://serlogistics.co.uk/uploads/1/3/0/2/130289371/c00b5329bef21.pdf
    • http://bygonebrooklyn.com/uploads/1/3/0/5/130538939/vabomuwon_mivasodupa_ratov.pdf
    • http://www.innatribe.com/uploads/1/3/0/2/130289748/dupikipozot_xofikadoge.pdf
    • http://stockmi.com/uploads/1/3/0/6/130620423/wuruduluwawolu_xowitibopura_mefosejerar.pdf
    • http://cattywhompus.net/uploads/1/3/0/7/130775737/d085a46e5.pdf
    • http://wadsworthupward.com/uploads/1/3/0/3/130313305/5869158.pdf
    • http://comiqube.com/uploads/1/3/0/6/130604539/2677270.pdf
    • http://dcwconstruction.com/uploads/1/3/0/4/130488288/tidalifibam.pdf
    • http://74-123-78-122.mgwnet.com/uploads/1/3/0/5/130551986/130551986.html#kali+linux+all+basic+commands

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001092.bin
acd6b540435dcf5c7f9f9e0654a271b00d81282bf577cde2da51a732f958c3bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1092 9472 bytes
font_01_sfnt_off00008f89.bin
63f5e27ee3d24cc00d413e59c301cc73ab377383609796993547673f2bea898c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F89 2600 bytes

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