Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad43d5e385e360f4…

MALICIOUS

PDF

35.8 KB Authoring application: Pdftk
MD5: cc4c12df8d98c76fec01ae7212ec0f0d SHA-1: 74cd0125e48e9e42a0b53864130ad80a4650d380 SHA-256: ad43d5e385e360f422dd584a1b23061ea324e7ac38b206e7430cc1991dadd2e2
150 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, and exhibits characteristics of a PDF link farm. It contains a large number of embedded URLs pointing to external PDF files, suggesting a phishing or SEO manipulation scheme. The primary purpose appears to be redirecting users to potentially harmful content through these numerous links.

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://jacquelineemerymedical.com/uploads/1/3/0/7/130776002/7389724.pdf
    • http://molim.net/uploads/1/3/0/6/130640000/jabumelejux_bamub_pegoso.pdf
    • http://throughtheroofphotography.co.uk/uploads/1/3/0/5/130588251/visisekepag.pdf
    • http://www.villarosavisuals.net/uploads/1/3/0/5/130550731/wizexa.pdf
    • http://mrramsay.co.uk/uploads/1/3/0/5/130541346/4559467.pdf
    • http://mail.starsandstripesplumbing.com/uploads/1/3/0/6/130620902/jofefibefaxov-mitaduped.pdf
    • http://replacementpoolcovers.com/uploads/1/3/0/2/130288006/ee088f65.pdf
    • http://www.tawabil-egypt.com/uploads/1/3/0/6/130604859/4419168.pdf
    • http://thenanastudios.com/uploads/1/3/0/7/130740610/3067198.pdf
    • http://civicloftsdenver.com/uploads/1/3/0/6/130639651/81477656b64e.pdf
    • http://balsamrootcatering.com/uploads/1/3/0/7/130740212/6735379.pdf
    • http://lilogisticscenter.com/uploads/1/3/0/4/130436165/tirazodepapoxezabot.pdf
    • http://themindfulchristian.net/uploads/1/3/0/5/130588288/1614665.pdf
    • http://inspiringmummyclub.co.uk/uploads/1/3/0/6/130621036/873e5af14e111.pdf
    • http://lushbeautynz.co.nz/uploads/1/3/0/5/130588850/zajodolibowedawa.pdf
    • http://nyegirlboutique.com/uploads/1/3/0/4/130479350/bifotosuxi-pumuka-jipejez.pdf
    • http://guardianskingdom.com/uploads/1/3/0/6/130639557/dawijova-sejokuwogu.pdf
    • http://g1284.bpmtc.com/uploads/1/3/0/4/130436224/1044124.pdf
    • http://copperheadfarm.com/uploads/1/3/0/2/130291531/5216539.pdf
    • http://mobile-care.info/uploads/1/3/0/2/130287261/9708323.pdf
    • http://builttosellcoaching.com/uploads/1/3/0/3/130313230/130313230.html#define+succession+planning+in+business+terms
    • http://thenanastudios.com/uploads/1/3/0/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f0e.bin
76843b9c149d95106dfef29c3b7128f77ddbe1f98e36ec02a7f66747b0538a90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F0E 6864 bytes

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