Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a9b5142478cfe9b…

MALICIOUS

PDF

40.8 KB Authoring application: Scribus
MD5: f081cc34c3333c82ae9437a58527980a SHA-1: 828ddac0b0abfd47318715637cb674f0d4822e9f SHA-256: 0a9b5142478cfe9b17e9190e3ce967ce942884a27ffbfe06e80c6f3dc7f3a53e
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links to other PDF files, masquerading as a PDF to Word converter. This is a common tactic for distributing malware or phishing content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output further support its malicious nature. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

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://ametkorca.com/uploads/1/3/0/5/130543816/jiluvagefosigenadawe.pdf
    • http://batonrougenaturalhairexpo.com/uploads/1/3/0/6/130639091/ririzuvigi.pdf
    • http://moveonidiomes.com/uploads/1/3/0/5/130539078/6025224.pdf
    • http://learnonlinefast.com/uploads/1/3/0/3/130313345/6491260.pdf
    • http://nationalarenaswimmingleague.org/uploads/1/3/0/6/130621897/volawaxoba-rupokoka-worek.pdf
    • http://alexandrajosutton.com/uploads/1/3/0/3/130323937/kidebiriz-kobizero.pdf
    • http://sueheathscience.com/uploads/1/3/0/2/130287965/e80ff9d23783a9.pdf
    • http://mitamasushi.com/uploads/1/3/0/5/130551006/9055080.pdf
    • http://t3wellness.com/uploads/1/3/0/5/130551668/mebatufa-sisepapujimi.pdf
    • http://shoptrueblessings.com/uploads/1/3/0/6/130621459/074e94457e08573.pdf
    • http://bodyworkbybarb.com/uploads/1/3/0/5/130543656/130543656.html#converter+pdf+to+word+filehippo

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001265.bin
518ae4782e923fd80667e8947268945a48b3841fb2029276238986187bb6967d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1265 7864 bytes

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