Malicious PDF — malware analysis report

Static analysis result for SHA-256 429e71054cfba6f3…

MALICIOUS

PDF

39.3 KB Authoring application: LibreOffice Draw
MD5: d9f141b992324b01311592695b0678c9 SHA-1: 3555e50cd2e24cefc48d4db9f2eb16f0e4b7feb7 SHA-256: 429e71054cfba6f34a2a01367ce515ccdc14bfa491739b05721971722bb754f8
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body itself is heavily obfuscated and contains fragmented text related to NBA draft lottery, which appears to be a lure.

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://claireporima.com/uploads/1/3/0/3/130313064/36d426cd38ed69.pdf
    • http://kohltechwindows.com/uploads/1/3/0/8/130814535/fa21a33.pdf
    • http://provaxium.com/uploads/1/3/0/5/130539825/tilisozadebo_zevurekenewav_rezexirotudap_nasaj.pdf
    • http://socialmynd.com/uploads/1/3/0/7/130775528/jexexekelulimofujimu.pdf
    • http://valleyofhemp.com/uploads/1/3/0/5/130589318/6915a.pdf
    • http://teamelam.com/uploads/1/3/0/4/130476043/banakirud_vejotinobijo_gozewinilul_sidebuvexede.pdf
    • http://simplyberger.com/uploads/1/3/0/7/130740189/bebedimagatosetaremo.pdf
    • http://footprintstutoring.com/uploads/1/3/0/6/130620454/7fafa.pdf
    • http://mail.beuniquebride.cz/uploads/1/3/0/7/130739963/danona.pdf
    • http://savethetreespdx.com/uploads/1/3/0/3/130379063/6709951.pdf
    • http://www.blacktailsurvival.com/uploads/1/3/0/2/130289756/f024082e595160.pdf
    • http://pcotechnologies.com/uploads/1/3/0/7/130738764/ferosi.pdf
    • http://php-pds.net/uploads/1/3/0/7/130776695/7276334.pdf
    • http://jimstack.net/uploads/1/3/0/5/130540284/dewemobadin.pdf
    • http://nedeni.net/uploads/1/3/0/7/130739653/42b653b1.pdf
    • http://ngabwe.com/uploads/1/3/0/6/130639443/zixisusegirap.pdf
    • http://thoroughbredfund.com/uploads/1/3/0/2/130270836/5508401.pdf
    • http://emmanuelchurchoutreachministry.org/uploads/1/3/0/6/130604449/112c7192e.pdf
    • http://www.paulsmusicacademy.com/uploads/1/3/0/6/130639590/8537589.pdf
    • http://tuijian.bpmtc.com/uploads/1/3/0/5/130551416/130551416.html#nba+draft+lottery+drawing+date

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003b03.bin
1c859eb1779381a4159147f90750cae89b214b300ad1ebdc1019e2c9086f6528		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3B03 7972 bytes

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