Malicious PDF — malware analysis report

Static analysis result for SHA-256 6654f4e122c4302e…

MALICIOUS

PDF

43.0 KB Authoring application: Serif PagePlus
MD5: cfdb5c8a044d35b39e506efc71f52c47 SHA-1: 77c44bc229cc9a2c84ebc08b97493301c93c8bf1 SHA-256: 6654f4e122c4302e2e71a241ae5666308e8457c65f6c9b548ae74ebfb7a388d8
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://pidaj.razbaby.ru/uploads/2020/01/27/5523319.pdf
    • http://master-grumer.ru/uploads/2020/01/29/fa1721b13d797.pdf
    • http://zetotulur.vipiski-besplatno9.icu/uploads/2020/01/27/jugakemizikovixirov.pdf
    • http://trainer-best.info/uploads/2020/01/28/lekutapumo-kafepuj-jiginis.pdf
    • http://kunul.armquiz.com/uploads/2020/01/28/27fd2e8ef7.pdf
    • http://andreablackerby.com/uploads/1/3/0/3/130313271/a73ddce40765.pdf
    • http://trubaok.ru/uploads/2020/01/27/5836042.pdf
    • http://zombieapocalypsegroup.com/uploads/1/3/0/4/130490808/5558683.pdf
    • https://wilarirezavik.weebly.com/uploads/1/3/0/5/130589137/74f95539c.pdf
    • http://tenix.clotheslux.com/uploads/2020/01/28/529656.pdf
    • http://vuted.how2save.ru/uploads/2020/01/29/6217c2.pdf
    • http://zabimetu.smartmeteo.ru/uploads/2020/01/27/liledexuxozefe.pdf
    • https://dotevupixalop.weebly.com/uploads/1/3/0/4/130488370/af31006481618.pdf
    • http://slot.cx/uploads/2020/01/28/2259030.pdf
    • http://tani.windowsx64.ru/uploads/2020/01/28/jedozapi-fujeka.pdf
    • http://xplorcore.com/uploads/1/3/0/6/130603688/diledas_danuzugun_wixezazojuvot.pdf
    • https://zaworerirakejas.weebly.com/uploads/1/3/0/5/130542852/febazaxonamotef.pdf
    • http://aseatrwc.com/uploads/1/3/0/2/130272295/130272295.html#agents+of+shield+torrent
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000152b.bin
d4c8b135ff1f38ed479c5da410079e853a92dde11e10a5cc8616abf0325048c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x152B 10064 bytes
font_01_sfnt_off0000610f.bin
6db2f878e0fd57d3a351d0d81a5ccd7b58f68df6728dadc3aee3ebeb1a1d6e60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x610F 16068 bytes

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