Malicious PDF — malware analysis report

Static analysis result for SHA-256 eef1a644d041d2b7…

MALICIOUS

PDF

35.7 KB Authoring application: Smallpdf Desktop
MD5: 32ff4b8172015e49009ce731f1cd6525 SHA-1: f8d367dfa818b92164201a252e19bba91c9a0651 SHA-256: eef1a644d041d2b7af80223fa320de104a1e288ce514c176a4c48b0d93a2cde8
128 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF contains a large number of external links, many pointing to suspicious domains, indicating a link farm for SEO manipulation or phishing. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the 'PDF_SEO_LINK_FARM' heuristic strongly suggest a phishing or malicious redirection attempt. The document body, though heavily corrupted, contains embedded URLs that are part of this link farm, with the primary suspicious URL being http://gisexufo.0106shop05.fun/uploads/2020/01/27/08768e.pdf.

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gisexufo.0106shop05.fun/uploads/2020/01/27/08768e.pdf
    • https://xakokazamajo.weebly.com/uploads/1/3/0/5/130544652/munenirilip.pdf
    • http://inity420.com/uploads/2020/01/28/sazuruvofikoz_sebaxokared.pdf
    • http://mtmviprecordingstudio.com/uploads/1/3/0/5/130590545/a799cd.pdf
    • http://kcbbc.org/uploads/1/3/0/6/130620874/c57e7792d7.pdf
    • http://o-rape.ru/uploads/2020/01/28/b377f5e00c.pdf
    • http://volaligiw.meitav-shuvu.org/uploads/2020/01/28/4950949.pdf
    • http://propertytaxguy.biz/uploads/1/3/0/4/130478203/detiporewes.pdf
    • https://gilikugezekide.weebly.com/uploads/1/3/0/5/130540246/9553139.pdf
    • https://vawirogogulop.weebly.com/uploads/1/3/0/5/130547969/18bc2b5d.pdf
    • http://botatev.cuggolin.xyz/uploads/2020/01/27/3ea985988d84ea2.pdf
    • http://cours-de-batterie-fouesnant.com/uploads/1/3/0/6/130620927/1b1f7635990.pdf
    • http://bestclinicla.com/uploads/1/3/0/6/130621203/e42db2168be3a72.pdf
    • http://sweetestdreams.org/uploads/1/3/0/6/130604859/130604859.html#cracked+photoshop+catalina

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001371.bin
00b3a1223f284f6a7ae54b4f11b1ea50a05ade5e3e36f7a5d2709398026eaeae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1371 7840 bytes

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