Malicious PDF — malware analysis report

Static analysis result for SHA-256 d801430953f1b6d0…

MALICIOUS

PDF

44.3 KB Authoring application: Pdftk
MD5: b86cd0e441498a6285197002bb499f39 SHA-1: 67cbb5c3a8b36b772c587dd9030c5df39fb03bed SHA-256: d801430953f1b6d0ebb33fb0bb6bf73f3946672be94239a0b1848eacfea22913
150 Risk Score

Malware Insights

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

This PDF document is classified as malicious due to its structure, which contains a large number of embedded external links. The document body suggests a lure related to IELTS vocabulary, likely intended to trick users into clicking these links. The primary attack pattern involves a link farm designed to redirect users to potentially malicious content hosted on various domains.

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://kelviron.com/uploads/1/3/0/7/130740127/jezenowivifufon_luwobi_kikokiw_bijajejusapam.pdf
    • http://thefountainofjoy.org/uploads/1/3/0/4/130436166/juluvuxove.pdf
    • http://www.luciapazziencausticart.com/uploads/1/3/0/7/130740140/932d27ad8b0ed3f.pdf
    • http://www.customcolormcr.com/uploads/1/3/0/8/130874067/8905627.pdf
    • http://summitcybersecurityconsulting.com/uploads/1/3/0/6/130620640/40b7dcd279c7b05.pdf
    • http://www.gshocktokyo.com/uploads/1/3/0/6/130622038/44c63e980f5417a.pdf
    • http://russlazaruk.com/uploads/1/3/0/5/130540010/a778b68b345cf88.pdf
    • http://fyentertainment.net/uploads/1/3/0/6/130639335/15550ae4f2a.pdf
    • http://artoflifer.com/uploads/1/3/0/2/130287538/3b0b24a3f2cffe6.pdf
    • http://ravencon.org/uploads/1/3/0/7/130776040/pezawekitom_nudut_gamupi_serizasiz.pdf
    • http://countertruths.com/uploads/1/3/0/3/130379589/mawekapor_pulurivitefemin.pdf
    • http://www.futurescholarsearlylearningcenter.com/uploads/1/3/0/4/130436289/mifowerewukodil_lukelosinilixel.pdf
    • http://utahprospects.com/uploads/1/3/0/7/130739781/4997295.pdf
    • http://cheapcarinsuranceokc.com/uploads/1/3/0/7/130738639/ee82dd0e8df7f89.pdf
    • http://neighborhoodpage.com/uploads/1/3/0/2/130272092/284038.pdf
    • http://1tei2.slpny.com/uploads/1/3/0/6/130639958/130639958.html#vocabulary+for+ielts+advanced+with+answers+pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003a4b.bin
0f23141ba94d37b49c53016ac63a9b008a6ac8e4c4656a8d80e6725f77750189		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3A4B 16140 bytes
font_01_sfnt_off000051f9.bin
47de85cbf2ff954f92a348cb23eb167422fd9cf01c6d9aa3d87391fa12ff4bfb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51F9 7976 bytes

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