Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f7b2a82a66ff5a7…

MALICIOUS

PDF

32.9 KB Authoring application: Karbon
MD5: f3b2ddaefd02338e7d93bec2e1b0bf6a SHA-1: 0d92a2387e99c916a816e91b30197d716d780331 SHA-256: 3f7b2a82a66ff5a79c627743d3480f220e2423c21509a03e5ef4aea61c496573
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. The PDF_SEO_LINK_FARM heuristic indicates a large number of embedded external links, with the first identified URL being http://paintinghopefoundation.com/uploads/1/3/0/5/130539185/jiwonubekuwovog-vawigaja-mejodej-sadataduzo.pdf. This suggests a phishing or content redirection attack. No scripts were extracted from this sample.

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://paintinghopefoundation.com/uploads/1/3/0/5/130539185/jiwonubekuwovog-vawigaja-mejodej-sadataduzo.pdf
    • http://betterbodiesgympattaya.com/uploads/1/3/0/4/130489423/kugop.pdf
    • http://noticiasinternacionales.net/uploads/1/3/0/5/130588272/7121187.pdf
    • http://edgelandscapeandmaintenance.com/uploads/1/3/0/4/130488401/gexaxisuj_vitowujakok.pdf
    • http://thetaxfreemillionaire.com/uploads/1/3/0/5/130551882/297345.pdf
    • http://porticosouth.com/uploads/1/3/0/4/130489423/penasidikejeme.pdf
    • http://principalwebmarketing.com/uploads/1/3/0/3/130379104/xoguxesob-tezetigavebifub.pdf
    • http://www.sparrowgalleryerie.com/uploads/1/3/0/5/130588670/b21314.pdf
    • http://sugarcaneswim.com/uploads/1/3/0/9/130968984/7809439.pdf
    • http://kjwhitfield.ca/uploads/1/3/0/4/130436137/b897ef8c6474c9.pdf
    • http://stageleftperformingarts.com/uploads/1/3/0/4/130483110/5bd121bf.pdf
    • http://diagbox.org/uploads/1/3/0/6/130639592/midatijifepomabisa.pdf
    • http://christianinspirationalwriters.rpjandco.com/uploads/1/3/0/6/130622110/07c36aee25.pdf
    • http://siouxland.services/uploads/1/3/0/5/130543468/e10cde702.pdf
    • http://wintercrossportfolio.com/uploads/1/3/0/3/130313193/bozupanajaroxajikak.pdf
    • http://submergeministries.com/uploads/1/3/0/6/130621649/zarupe_mabumukofi_wuxejaremil.pdf
    • http://www.test3.ironcastlemarketing.com/uploads/1/3/0/9/130969763/d001297dcd65b2.pdf
    • http://mindforyouth.org/uploads/1/3/0/5/130590310/sidobavikegor.pdf
    • http://e-techbooks.com/uploads/1/3/0/4/130476204/0e0d4cae3fe87.pdf
    • http://74-123-79-209.mgwnet.com/uploads/1/3/0/5/130550951/130550951.html#animal+cell+coloring+worksheet+answers

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000022e0.bin
ab5d0dbd32fc7f62bdaaa8136857242067a848eb8d247c69bdecea64da53cb31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x22E0 7236 bytes

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