Malicious PDF — malware analysis report

Static analysis result for SHA-256 c84dbcfdda994f78…

MALICIOUS

PDF

29.9 KB Authoring application: PDFBox
MD5: 75130625fb04970594326bcfccaf63b6 SHA-1: 5d002405f407ed48a47a8b130e2045f1f355ddfd SHA-256: c84dbcfdda994f78bc26257e37ebfdf0524da75537f81ecc6b89a850130ea632
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used for SEO manipulation or to direct users to malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection intent. The document body, though heavily obfuscated, contains references to these links, reinforcing the attack pattern.

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://writersink85.com/uploads/1/3/0/2/130289166/2b9021ee170cb07.pdf
    • http://minebrewery.com/uploads/1/3/0/3/130313150/vetutojizijuniza.pdf
    • http://sitbackrobotics.com/uploads/1/3/0/4/130477048/ed57ba615d.pdf
    • http://puffyshirts.life/uploads/1/3/0/5/130588982/1556411.pdf
    • http://myneverendingbucketlist.com/uploads/1/3/0/5/130539128/c6c3b2e9.pdf
    • http://mcfeesilversmith.com/uploads/1/3/0/5/130588905/17f9dbc.pdf
    • http://redpenapp.net/uploads/1/3/0/7/130738945/jamerede.pdf
    • http://myhealinghands.org.uk/uploads/1/3/0/2/130287875/vesarujuve.pdf
    • http://kellenkellenkellen.com/uploads/1/3/0/3/130313356/rogezotofolafol.pdf
    • http://otherworldlywaxesandwhatever.com/uploads/1/3/0/6/130605403/1834811.pdf
    • http://anniesditta.com/uploads/1/3/0/2/130271116/tomagutofovig_logidaweweme.pdf
    • https://naxumumi.weebly.com/uploads/1/3/0/3/130323659/kawugaxeje.pdf
    • http://mysoundcollective.com/uploads/1/3/0/4/130489297/130489297.html#epson+rx595+user+guide

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000129c.bin
15cc07bc0e440962b5bb33d6cbba85f96362991a63a4fa731810deb428a4797f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129C 7156 bytes

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