Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f5db7979e4e00d6…

MALICIOUS

PDF

47.0 KB Authoring application: Scribus
MD5: bc186379d85f026498aa51385ab3c46d SHA-1: 808b85fcc48353d56e732961e7f17b669bfab72b SHA-256: 2f5db7979e4e00d625c54a2d6d9d5f7482471adf661f63a96fbc62bbbb04d4a3
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, as detected by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a coordinated effort to distribute content or redirect users. The ClamAV detection and ML classifier further confirm the malicious nature of this document, likely related to phishing or SEO spam campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://visionary-affairs.com/uploads/1/3/0/3/130379503/e0909c628d5e.pdf
    • http://newenglandpowerlight.com/uploads/1/3/0/5/130589094/7ad1a.pdf
    • http://hotgirlsofamerica.com/uploads/1/3/0/6/130605143/8661260.pdf
    • http://practicalityplus.com/uploads/1/3/0/4/130475997/2325109.pdf
    • http://vip-avtokran.ru/uploads/2020/01/28/6416514.pdf
    • http://catamaranaminablog.com/uploads/1/3/0/2/130271244/7027577.pdf
    • http://londyn.letenky-sky.sk/uploads/1/3/0/5/130590295/wuvoperanulugedediw.pdf
    • http://fotografs.ru/uploads/2020/01/28/xoxinafujepeg.pdf
    • http://whiterockmedical.com/uploads/1/3/0/5/130551675/wanuxasasunelalala.pdf
    • http://nirvanalove.org/uploads/1/3/0/6/130604358/jajedale_webonewilukav_xofudijututalaf_dodewuzepezoz.pdf
    • http://themanadvice.com/uploads/1/3/0/6/130604879/6201607534.pdf
    • http://cambridgeasparagus.org/uploads/1/3/0/4/130489800/bolirukowuvijina.pdf
    • http://bejustalittlebetter.com/uploads/1/3/0/3/130313180/130313180.html#arbol+con+raiz+dibujo

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000130e.bin
6ab8c0e1b7e78ab925129d9e31f35c1e13989c95c8a391f98398f616acb8ba7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x130E 8584 bytes
font_01_sfnt_off00006012.bin
ef358ebc7dcd24546f2d2a977003283b7f9cb2ed9e11aca3718aca3c0532d54e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6012 6796 bytes
font_02_sfnt_off00007099.bin
2c63176390fa9b25ce4b643fd2e364bfce9fcf19ecf3c857c9db7149ad7d4846		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7099 16160 bytes

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