Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff7247f3bf277bd8…

MALICIOUS

PDF

43.3 KB Authoring application: pstoedit
MD5: c366e0d6bafe39c798deac884dabeecc SHA-1: af057f23ccba1e92f638266b4a64d37f7db5dab2 SHA-256: ff7247f3bf277bd856b970a210878fe09734ce451b4a65a8a68cee567f94c9a7
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.003 Phishing: Malicious Link T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique commonly used for link farms or to distribute phishing content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The heuristic 'PDF_SEO_LINK_FARM' confirms the presence of numerous external links, suggesting a redirection or download scheme.

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://damaebanisteria.com/uploads/1/3/0/4/130490218/wobasok_gepejozewurakip.pdf
    • http://collegeprepkickingacademy.com/uploads/1/3/0/6/130620620/jokuzaxu.pdf
    • http://3fweixin.com/uploads/1/3/0/8/130873975/kivogedav.pdf
    • http://pdxpersonalinjury.com/uploads/1/3/0/5/130539182/1367140.pdf
    • http://sarahmacdonaldcoach.co.uk/uploads/1/3/0/5/130589354/vulofasedexof.pdf
    • http://chrislloydmusic.com/uploads/1/3/0/3/130324227/vupemalu-welanamep.pdf
    • http://nataliezinawalschots.net/uploads/1/3/0/4/130476263/nitez_palabajuwedu_kuxunosilegugu.pdf
    • http://atombeauty.com/uploads/1/3/0/6/130620916/fimuwubewuxajakedi.pdf
    • http://nataliezinawalschots.net/uploads/1/3/0/8/130814728/tasemolaj.pdf
    • http://colorphotography.com/uploads/1/3/0/7/130738948/f174450bf.pdf
    • http://crownway.org/uploads/1/3/0/6/130621488/19261110afa92.pdf
    • http://electro-hogar.com/uploads/1/3/0/4/130435914/9f61224cd.pdf
    • http://chronotiscfs.com/uploads/1/3/0/6/130621854/9815720.pdf
    • http://natemalone.com/uploads/1/3/0/4/130476657/8774270.pdf
    • http://gainweight.com/uploads/1/3/0/8/130813740/6098778.pdf
    • http://www.equestrianeliteatapplejackfarm.com/uploads/1/3/0/5/130588346/130588346.html#personal+pronouns+object+pronouns+possessive+adjectives+possessive+pronouns+worksheet

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003621.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3621 16036 bytes
font_01_sfnt_off00004d67.bin
4240d0ec85bae1cfe7bf26ec23baf925ed58fd3a1e3442be109497dc1d99f4cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D67 8400 bytes

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