Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b8a1e0f0d01492c…

MALICIOUS

PDF

49.4 KB Authoring application: OpenOffice Draw
MD5: 5444338d950cb7220c787b440212f4d5 SHA-1: 12c0536302e88697300a47b63f84a31ae974201f SHA-256: 6b8a1e0f0d01492c6dd205c87415bd6c867f9407ef2a0387c7f5ba670079113a
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file exhibits characteristics of a link farm, with numerous embedded URLs pointing to other PDF documents. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or distributing further malware. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests a common tactic to bypass security gateways by encrypting payloads, which are then decrypted using a provided password.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://performx.shop/uploads/1/3/0/4/130488935/5953498.pdf
    • http://seasonalswap.com/uploads/1/3/0/6/130605259/jotaxix-sopaboxomebediw.pdf
    • http://the-way-of-life-blog.com/uploads/1/3/0/3/130323542/jefatobidasuku_bunudoloz.pdf
    • https://maleroridib.weebly.com/uploads/1/3/0/5/130588165/latorogixikaj-fagowagelel.pdf
    • http://neroliltd.com/uploads/1/3/0/3/130324350/a31b986e03e.pdf
    • http://resolute-sf.com/uploads/1/3/0/4/130475965/7876737.pdf
    • http://worldofcoffee-dublin.com/uploads/1/3/0/4/130483205/bibakuvan_xisexaduvali.pdf
    • http://communitycure.net/uploads/1/3/0/6/130604320/7477172.pdf
    • http://oneshop1.fun/uploads/2020/01/29/tikafejed-nasejegul-figusex-xuxadubelira.pdf
    • http://alaskacenterforfasd.com/uploads/1/3/0/4/130483606/7033317.pdf
    • http://nicoleedwardslimited.com/uploads/1/3/0/5/130590076/nananupera.pdf
    • http://earthmammablog.com/uploads/1/3/0/6/130621006/4a4735720443.pdf
    • http://misssupremepurityqueen.com/uploads/1/3/0/5/130551604/130551604.html#parasite+in+city+descargar+juego+gratis
    • 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_off000013b4.bin
baf813ae3a1b6ce87be60509fb36b3ac29ae0ff391a5a82cf0f645da65456274		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13B4 9752 bytes
font_01_sfnt_off00007b46.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B46 16036 bytes

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