Malicious PDF — malware analysis report

Static analysis result for SHA-256 72babfdbd8c03d2b…

MALICIOUS

PDF

39.4 KB Authoring application: SWFTools
MD5: 9d497fa0dd4e202ba4caa1bc2b4c4f6c SHA-1: 058e1de12d71ea87f3efcee524f2cf4516feeeee SHA-256: 72babfdbd8c03d2b47f46eb4a1d8e29b22d4958a1725ffb99f1bcc29df230daa
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 spam or to distribute further malicious content. ClamAV identified this as Pdf.Phishing.TtraffRobotInstall-7605656-0, and an ML classifier also flagged it as malicious. The document body contains garbled text but includes a reference to 'Game dev master tycoon story mod apk', suggesting a lure.

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://fisco24.com/uploads/1/3/0/3/130313141/1317780.pdf
    • http://celestialinspirationsstore.com/uploads/1/3/0/2/130288522/2572615.pdf
    • http://mountedcharger.com/uploads/1/3/0/6/130621051/4303463.pdf
    • http://behdaar.org/uploads/1/3/0/6/130620795/loraxefesane-nuvikisagevew-jerutukuwitel-mikaj.pdf
    • http://imaginarymonsters.net/uploads/1/3/0/4/130478709/litinilogijogewa.pdf
    • http://streamlinenation.net/uploads/1/3/0/4/130478819/3781833.pdf
    • http://eegtube.com/uploads/1/3/0/4/130492771/bojirisusi_mosus.pdf
    • http://zedozowale.agicole-acces.com/uploads/2020/01/28/4813391.pdf
    • http://riapromotions.weebly.com/uploads/1/3/0/5/130545249/mavapamogolifo.pdf
    • http://sth-168.com/uploads/1/3/0/6/130604499/dd6a35.pdf
    • http://mrmacbiblebook2.com/uploads/1/3/0/7/130738831/130738831.html#game+dev+master+tycoon+story+mod+apk

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000129b.bin
c023d5d46f447b42e42dbae71a89dbf4d490e46670ff6e02f08ddfb979747846		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129B 8556 bytes

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