Malicious PDF — malware analysis report

Static analysis result for SHA-256 7387ec3e97e48890…

MALICIOUS

PDF

55.8 KB Authoring application: LibreOffice Draw
MD5: b0125745eb0e4f460dbdac2a6d1015e5 SHA-1: 4204d89c450bbaad94729db595ea189a24c6c0e5 SHA-256: 7387ec3e97e4889092b182f80f13fd7fcd4a7f3b5ce5448b8e7fa3ac5bb0a237
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to distribute malicious content. ClamAV and ML classifiers also flagged this file as malicious, specifically identifying it as a phishing-related PDF. The embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.bynanajaja.com/uploads/1/3/0/4/130476462/8f6195cfbaea7.pdf
    • http://neurology-u-tokyo.com/uploads/1/3/0/5/130550970/wuvixedileja.pdf
    • http://8611k2.com/uploads/1/3/0/3/130323675/jadijamowale.pdf
    • http://www.manjindersinghmanesh.org/uploads/1/3/0/4/130476332/xamebe-nujuka-gonopelibor.pdf
    • http://tsmo.net/uploads/1/3/0/6/130639365/favimadejofonu.pdf
    • http://seattlesadtherapy.com/uploads/1/3/0/6/130604025/2751250.pdf
    • http://vantagepointds.co.uk/uploads/1/3/0/8/130874051/73d1a90b.pdf
    • http://drinkbelle.com/uploads/1/3/0/6/130621370/losagulexurugexe.pdf
    • http://e2biopharma.com/uploads/1/3/0/6/130639333/derem.pdf
    • http://gowlands.com/uploads/1/3/0/6/130604085/196b77a.pdf
    • http://www.hallstaxservice.com/uploads/1/3/0/5/130590608/3281347.pdf
    • http://www.dev2018.digcitinstitute.com/uploads/1/3/0/5/130539218/130539218.html#sample+ielts+speaking+questions+and+answers+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000129d.bin
51c34fb0a77a3d0e21e5f0670ae773b3b60cdbcd0be8b3c80c8bc8ac87521a80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x129D 8088 bytes

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