Malicious PDF — malware analysis report

Static analysis result for SHA-256 03488885744d3a08…

MALICIOUS

PDF

41.4 KB Authoring application: Serif PagePlus
MD5: d25012b1fbd9915f41cc19f13d8a172b SHA-1: e71a8043ef3593fef2aef171be2dfe2a8306b416 SHA-256: 03488885744d3a08fee186ccdcf28ee07aa93140902f971048d74e883c2cb00b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 and the ML classifier output further support its malicious nature. The embedded URLs likely lead to phishing content or further malware distribution, aligning with a spearphishing attachment attack pattern.

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 https://wigepeponaku.weebly.com/uploads/1/3/0/2/130270768/velovomujun-gosisinadas.pdf
    • http://2waytomobile.com/uploads/1/3/0/6/130639173/4170786.pdf
    • http://rezunavime.ascenseursocial.org/uploads/2020/01/27/xanedorisigorop_walizasi.pdf
    • http://employeeadvocateinstitute.net/uploads/1/3/0/5/130551467/fegejudifaxo_gewisisuzap_dituwoj.pdf
    • https://xixadizo.weebly.com/uploads/1/3/0/4/130476887/6749456.pdf
    • http://a-aon.com/uploads/1/3/0/5/130588956/tavevowenokedusobut.pdf
    • http://keyproserv.com/uploads/1/3/0/4/130476242/mozojusenuv.pdf
    • http://carterskennel.com/uploads/1/3/0/5/130589165/wabulek.pdf
    • http://suprimos.club/uploads/1/3/0/5/130550762/xuwixufotutu_godikinikupa_risebuvej_zipixed.pdf
    • http://reelectmayorjohnstontville.com/uploads/1/3/0/6/130621654/130621654.html#runtastic+six+pack+health+app
    • 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_off0000126b.bin
46d7e646ce0f296c97deb3f8ea9a311915b5f9c1a5085ecafc047207b2c3c84c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x126B 7956 bytes
font_01_sfnt_off00005b7f.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B7F 16036 bytes

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