Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7ba1f4795009d34…

MALICIOUS

PDF

37.3 KB Authoring application: Pdftk
MD5: 4b4da0e067be90e2ec2caf00556c511c SHA-1: ceb826bfee4d8b2b418d0171602995ae364f5ff1 SHA-256: e7ba1f4795009d3448f82d041388c6a5038378d48c344e9ea6bc297d1436bfb4
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links to external PDF documents, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection of 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious classification. The embedded URLs likely serve as a mechanism to distribute phishing content or redirect users to malicious sites. No scripts were extracted from this sample.

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 https://www.pugetsystems.com/guides/709
    • http://campmarymount.org/uploads/1/3/0/3/130323209/a908a44d43.pdf
    • http://newkids.co.uk/uploads/1/3/0/7/130740378/6751892.pdf
    • http://cimarronguitars.com/uploads/1/3/0/2/130271209/gepexopifowim.pdf
    • http://radiantrebelcollective.com/uploads/1/3/0/2/130288401/nijerif.pdf
    • http://djharperoldschool.com/uploads/1/3/0/4/130436127/xobidamodojiged.pdf
    • http://equilibrium21.online/uploads/1/3/0/5/130588675/vivexowanux_zuwifab_biliwatuluka_rapobov.pdf
    • http://el056.elrepco.com/uploads/1/3/0/5/130541600/8531982.pdf
    • http://satellitesessionsmusic.com.au/uploads/1/3/0/5/130540664/8406511.pdf
    • http://www.4keepsake.net/uploads/1/3/0/7/130776508/56221f1.pdf
    • http://tipsforteaching.org/uploads/1/3/0/4/130476243/1776549.pdf
    • http://legacytransportation-freightbrokerage.com/uploads/1/3/0/8/130815093/b47c46.pdf
    • http://dualbatterykit.com/uploads/1/3/0/2/130291434/5900159.pdf
    • http://www.savingsdowns.com/uploads/1/3/0/6/130605369/wuluxerefalozajuw.pdf
    • http://teamdelta.net/uploads/1/3/0/5/130551876/21ecaf212.pdf
    • http://mkollaras.com/uploads/1/3/0/2/130270971/fddbadf.pdf
    • http://summitacademyma.com/uploads/1/3/0/5/130588280/4149163.pdf
    • http://abbreviate16.pleasingfood.com/uploads/1/3/0/6/130640125/130640125.html#agisoft+processing+time

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000036b6.bin
870902f2ce7500738c33485c2d62351dd78a33b2503e42dcd1f26a09c42e5af7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x36B6 7752 bytes

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