Malicious PDF — malware analysis report

Static analysis result for SHA-256 4beb38fce9fef6ba…

MALICIOUS

PDF

36.6 KB Authoring application: OpenOffice Draw
MD5: d5d8430c67e9e51ac1d133391f5c1e05 SHA-1: 2e76c31cb3dee3eefe093d275513c102be69fb12 SHA-256: 4beb38fce9fef6ba99a6dffb67d00182226c2b5abd3156fa7c82c16e484d5914
180 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment T1027 Obfuscated Files or Information

The PDF file contains a large number of embedded links to other PDF files, suggesting a link farm or SEO abuse tactic. It also instructs the user to disable security software, a common lure in phishing attacks. The document impersonates a signing service to trick the user into downloading and potentially executing further malicious content. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Heuristics 5

  • 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
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • Document signing service impersonation lure medium SE_DOCUSIGN_LURE
    Document impersonates DocuSign, Adobe Sign, or a similar signing service in a signing-request context
  • 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://liquorlawsvt.com/uploads/1/3/0/5/130588579/tuxaxo-nimubatumejabod.pdf
    • http://konceptdev.net/uploads/1/3/0/7/130739502/sorejepikejipepij.pdf
    • http://www.star-nrg.com/uploads/1/3/0/7/130776720/c34b260920df73.pdf
    • http://mta-sts.mx.joangraham.com/uploads/1/3/0/5/130590555/temejoged.pdf
    • http://misssampson.com/uploads/1/3/0/2/130274258/5531867.pdf
    • http://stakemycoin.com/uploads/1/3/0/3/130313619/3110192.pdf
    • http://www.amethystdreams.com.au/uploads/1/3/0/7/130739746/1be8c0b.pdf
    • http://christinecarson.net/uploads/1/3/0/5/130590714/f677149e993fb06.pdf
    • http://mikesfamoussteaksandsubs.com/uploads/1/3/0/3/130323724/8996766.pdf
    • http://authorjulievail.com/uploads/1/3/0/2/130288986/5266bf8ae.pdf
    • http://atlantadentalanesthesia.com/uploads/1/3/0/3/130379612/1506728.pdf
    • http://woodridgemusicclub.com/uploads/1/3/0/7/130738875/9026722.pdf
    • http://hope4womeninternational.com/uploads/1/3/0/7/130776069/ritiburajafo.pdf
    • http://bendavidsonministries.com/uploads/1/3/0/4/130488983/gagewituzov.pdf
    • http://shopprayhustleslay.com/uploads/1/3/0/4/130477176/muxuduwolemuwuragi.pdf
    • http://just4owens.com/uploads/1/3/0/7/130775950/nudefapixodebaf.pdf
    • http://powerwashsystems.net/uploads/1/3/0/4/130476587/jazobo_mipegumoz_xeruve_zewumibobefu.pdf
    • http://the-well.net/uploads/1/3/0/5/130590507/xasote-ganenixe.pdf
    • http://www.comengetboothed.com.au/uploads/1/3/0/6/130639309/637198.pdf
    • http://christopherwyand.com/uploads/1/3/0/5/130590770/nuwenefuguk.pdf
    • http://862.bpmtc.com/uploads/1/3/0/8/130813979/130813979.html#adobe+acrobat+reader+pro+dc+gratis
    • http://www.comengetboothed.com.au/uploads/1/3/0/6/130639309

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f80.bin
b975318b5fe8d450f3e5cee23461d3faa153cd7bf0359348009961b607725699
pdf-font-stream PDF embedded font (sfnt) at offset 0x2F80 7852 bytes