Malicious PDF — malware analysis report

Static analysis result for SHA-256 159ce7bd0defc0a6…

MALICIOUS

PDF

83.6 KB Authoring application: GIMP
MD5: 30f83691a3bf59fa61f6fd459ede3c68 SHA-1: 42f510d567e5861c000dc8a5ad22af3d989c56e2 SHA-256: 159ce7bd0defc0a6e58a23710021d87640b9f67e05a92c5bce1f3c2be3b32b48
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and a high ML classifier score further support its malicious nature. The document body content appears to be corrupted or heavily obfuscated, preventing a clear understanding of its specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://rollinghillsrvpark.com/uploads/1/3/0/2/130287310/kitajodabamajugi.pdf
    • http://pulse360fl.com/uploads/1/3/0/6/130620968/vobeza.pdf
    • http://shawneemiddle.org/uploads/1/3/0/5/130551006/rigijapudoji-xukim-ruwaz-sawuxabotu.pdf
    • http://kronx.com/uploads/1/3/0/3/130324289/2e968.pdf
    • http://www.spoonpoint.com/uploads/1/3/0/3/130323794/zuxovumisopovesewod.pdf
    • http://dolansbarinfolsom.com/uploads/1/3/0/3/130323908/movifufapivulu_tiriveziruti_faloledexij.pdf
    • http://beccasbling.net/uploads/1/3/0/5/130589444/a71507fd9.pdf
    • http://lisathomas-designs.com/uploads/1/3/0/2/130273790/mudijuwipuma.pdf
    • http://celebrationseventsolutions.com/uploads/1/3/0/2/130273814/ximafaga.pdf
    • http://rockeweb.net/uploads/1/3/0/7/130739427/2239076.pdf
    • http://acqrealty.com/uploads/1/3/0/5/130540619/4231673.pdf
    • http://www.rds-locksmiths.co.uk/uploads/1/3/0/4/130488412/fomolu_digapowuxe_xinonixeremop_litefileju.pdf
    • http://apmaschinen.ch/uploads/1/3/0/8/130874520/8278119.pdf
    • http://glambydesign.com/uploads/1/3/0/3/130379398/gojerifem.pdf
    • http://toosex.live/uploads/1/3/0/8/130874170/c9400a54845c.pdf
    • http://receiptreceipt.com/uploads/1/3/0/8/130814645/xupibetebunixetisu.pdf
    • http://micahrichman.com/uploads/1/3/0/4/130476452/tupujabilik-dokedexogowup.pdf
    • http://adsl-63-204-18-4.benefitplans.org/uploads/1/3/0/4/130490444/130490444.html#edible+mushroom+identification+guide+new+zealand
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002154.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2154 16036 bytes
font_01_sfnt_off000038e9.bin
4dcb3b3b1c99eafb80c443eb1709e4c52955e5913a9a21453d8f8335c4e193f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x38E9 9136 bytes
font_02_sfnt_off00010ea7.bin
41d5c9cb4d60b7530e3cfd93a78efd430fe179aa57a8296e74fb8a971da4b0ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10EA7 2600 bytes

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