Malicious PDF — malware analysis report

Static analysis result for SHA-256 65a8d89cde5895c4…

MALICIOUS

PDF

39.9 KB Authoring application: pstoedit
MD5: f861b7de6d1f73ba83f92b72eb8fbd8a SHA-1: d2e310a06324b7fecb44fa2b3a9169d642ccef66 SHA-256: 65a8d89cde5895c4f51f5e188719730571804be80406948f0a08f0a4ee4d1f5a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded external links, a technique often used for SEO manipulation or to distribute further malicious content. ClamAV detected this file as Pdf.Phishing.TtraffRobotInstall-7605656-0, and a machine learning classifier also flagged it as malicious. The document body is heavily obfuscated and unreadable, providing no direct clues about its specific intent beyond the link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://www.billingspayments.com/uploads/1/3/0/4/130477702/8992150.pdf
    • http://tor.money/uploads/1/3/0/5/130590496/wapewiv_xobokitanewaf_kamak_vevubul.pdf
    • http://www.aldhikraph.org/uploads/1/3/0/4/130483256/2707811.pdf
    • http://christine-carney.com/uploads/1/3/0/3/130379287/4921469.pdf
    • http://www.bnbstyle.net/uploads/1/3/0/4/130476454/kebudobamopebexipep.pdf
    • http://theoriginalhomunculuscompany.com/uploads/1/3/0/7/130776447/zipakuduz.pdf
    • http://eventmamas.com/uploads/1/3/0/4/130488691/583260.pdf
    • http://infinitivetrustshop.com/uploads/1/3/0/6/130639839/labitamifuvo-watonekexogak-mifanobumun.pdf
    • http://your1life.com/uploads/1/3/0/5/130543813/junevurakadeku.pdf
    • http://ninagandhi.net/uploads/1/3/0/6/130604333/4224961.pdf
    • http://watercolorcreativitylessons.com/uploads/1/3/0/3/130313148/004d174c9d4a.pdf
    • http://thinkhappinessinc.org/uploads/1/3/0/6/130639814/fozadudon.pdf
    • http://shahwar.com/uploads/1/3/0/3/130313069/4840d.pdf
    • http://mountyhorseandsports.com/uploads/1/3/0/5/130543813/gedufa_wexavowu_tizekibon.pdf
    • http://thegoldblacklist.com/uploads/1/3/0/5/130590366/66dbe6042.pdf
    • http://cpanel.xanderapponi.com/uploads/1/3/0/6/130605156/8e143de.pdf
    • http://michelejoyjewelry.com/uploads/1/3/0/3/130323406/ed7771821c75.pdf
    • http://mercedesschools.com/uploads/1/3/0/7/130776688/4c14e08932d8f.pdf
    • http://crystalcatdesigns.com/uploads/1/3/0/4/130476122/6afd71.pdf
    • http://host117.carmichaelnl.com/uploads/1/3/0/5/130538902/130538902.html#key+english+test+reading+and+writing
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001a7f.bin
50dc865112b31b8628c9170d82daeefa18b8227744a71909c0440548ffdcd4ea
pdf-font-stream PDF embedded font (sfnt) at offset 0x1A7F 16132 bytes
font_01_sfnt_off00002f2d.bin
171afb6bedcc13279c3ef12f27b89408156d7ab43f0646bcc70c5474be0cb90a
pdf-font-stream PDF embedded font (sfnt) at offset 0x2F2D 2636 bytes
font_02_sfnt_off00003aff.bin
32c2d531564c1467a0bd1b0861ac8891be33e57a55a1776f0eae8db024eadfaf
pdf-font-stream PDF embedded font (sfnt) at offset 0x3AFF 8412 bytes